ASTROSAT CZTI

Data Quality Report

Orbit 34789

Creation date: 2022-03-05T17:54:49.198587
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/AS1C07_004T01_9000004990_34789cztM0_level2.evt modeM0/AS1C07_004T01_9000004990_34789cztM0_level2_quad_clean.evt
Size (bytes)506,698,56094,838,400
Size483.2 MB 90.4 MB
Events in quadrant A3,075,806608,025
Events in quadrant B3,774,751618,140
Events in quadrant C3,347,009623,781
Events in quadrant D4,711,688573,708

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131273
B0152562
C0136522
D0183462

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A643060.093313%
B64301732.690513%
C6430380.590980%
D64301933.001555%

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 9295 6432 1 1 0.01% 0.02%
B 9295 6432 100 100 1.08% 1.55%
C 9295 6432 27 27 0.29% 0.42%
D 9295 6432 164 164 1.76% 2.55%

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 72585 474.61 754 737 151.4
A 10 83 50880 331.23 754 737 151.4
A 15 174 19456 123.65 754 737 151.4
B 5 172 527058 3629.19 748 729 145.0
B 5 255 109041 746.84 748 729 145.0
B 4 232 88148 602.78 748 729 145.0
C 15 214 274053 1595.37 737 743 171.3
C 0 10 116894 678.0 737 743 171.3
C 14 67 66249 382.37 737 743 171.3
D 8 195 1019920 5772.49 724 707 176.6
D 13 249 296286 1674.06 724 707 176.6
D 2 249 253231 1430.21 724 707 176.6

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