ASTROSAT CZTI

Data Quality Report

Orbit 20201116_A10_016T01_9000004016_level2

Creation date: 2021-01-07T11:43:48.397949
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A10_016T01_9000004016cztM0_level2_bc.evt modeM0/AS1A10_016T01_9000004016cztM0_level2_quad_clean.evt
Size (bytes)5,353,954,5601,590,085,440
Size5.0 GB 1.5 GB
Events in quadrant A27,098,54910,174,517
Events in quadrant B35,354,08610,212,301
Events in quadrant C28,102,7309,873,076
Events in quadrant D62,999,2289,253,612

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01840
B01840
C01840
D01840

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025680
B025680
C025680
D025680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02649490
B02971190
C02735830
D04026920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12620714851.176638%
B12620741413.281118%
C12620725672.033960%
D1262071428011.314745%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 144523 126199 21 21 0.01% 0.02%
B 144523 126186 261 261 0.18% 0.21%
C 144523 126189 6 6 0.00% 0.00%
D 144523 126188 4008 4008 2.77% 3.18%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 6 16 400220 265.63 6880 6767 1481.2
A 13 254 206198 134.64 6880 6767 1481.2
A 13 248 50798 29.73 6880 6767 1481.2
B 3 64 5430845 4225.36 6849 6685 1283.7
B 10 245 1918007 1488.9 6849 6685 1283.7
B 10 246 690324 532.55 6849 6685 1283.7
C 3 233 2439286 1563.56 6630 6601 1555.9
C 4 175 96628 57.86 6630 6601 1555.9
C 13 61 37768 20.03 6630 6601 1555.9
D 1 52 28230957 18673.29 6413 6186 1511.5
D 11 248 3969864 2622.34 6413 6186 1511.5
D 2 250 1782084 1174.92 6413 6186 1511.5

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter