ASTROSAT CZTI

Data Quality Report

Orbit 37110

Creation date: 2024-06-27T21:35:40.308153
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/AS1A09_138T04_9000005282_37110cztM0_level2.evt modeM0/AS1A09_138T04_9000005282_37110cztM0_level2_quad_clean.evt
Size (bytes)430,441,92065,957,760
Size410.5 MB 62.9 MB
Events in quadrant A2,789,269409,207
Events in quadrant B3,022,177409,235
Events in quadrant C2,794,846407,285
Events in quadrant D4,051,583382,349

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117093
B0125862
C0116332
D0158812

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5557170.305920%
B55571402.519345%
C5557150.269930%
D55573486.262372%

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 7169 5557 2 2 0.03% 0.04%
B 7170 5557 110 110 1.53% 1.98%
C 7170 5558 7 7 0.10% 0.13%
D 7170 5558 328 328 4.57% 5.90%

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 10 83 271744 2098.02 638 625 129.2
A 9 143 26123 197.31 638 625 129.2
A 7 3 9993 72.49 638 625 129.2
B 5 172 339856 2795.6 627 609 121.4
B 5 184 98755 808.78 627 609 121.4
B 15 85 39826 323.17 627 609 121.4
C 15 214 238814 1630.68 622 626 146.1
C 14 254 43187 291.38 622 626 146.1
C 0 207 39434 265.69 622 626 146.1
D 1 52 649297 4343.54 609 592 149.3
D 13 249 515377 3446.85 609 592 149.3
D 1 47 161528 1077.58 609 592 149.3

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