ASTROSAT CZTI

Data Quality Report

Orbit 35903

Creation date: 2022-06-08T23:55:07.444021
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1A11_080T01_9000005146_35903cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35903cztM0_level2_quad_clean.evt
Size (bytes)475,810,560100,728,000
Size453.8 MB 96.1 MB
Events in quadrant A3,240,040674,316
Events in quadrant B3,250,999667,455
Events in quadrant C3,343,834659,191
Events in quadrant D4,165,039627,758

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132623
B0132532
C0132352
D0162732

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6044100.165453%
B6044691.141628%
C60441302.150893%
D60442243.706155%

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 9299 6046 0 0 0.00% 0.00%
B 9299 6046 38 38 0.41% 0.63%
C 9299 6046 83 83 0.89% 1.37%
D 9299 6046 167 167 1.80% 2.76%

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 15 169 205062 1359.64 734 722 150.3
A 10 83 178500 1182.9 734 722 150.3
A 13 254 10302 63.74 734 722 150.3
B 5 172 175211 1262.55 723 709 138.2
B 5 255 93297 669.89 723 709 138.2
B 0 213 59305 423.95 723 709 138.2
C 0 10 339534 2066.44 703 711 164.0
C 15 214 251372 1528.75 703 711 164.0
C 9 69 5581 29.7 703 711 164.0
D 8 195 336733 1941.81 701 684 173.1
D 13 249 264823 1526.29 701 684 173.1
D 2 250 198927 1145.52 701 684 173.1

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