ASTROSAT CZTI

Data Quality Report

Orbit 20200210_A07_147T01_9000003490_level2

Creation date: 2025-12-09T05:58:38.639290
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/AS1A07_147T01_9000003490cztM0_level2.fits modeM0/AS1A07_147T01_9000003490cztM0_level2_quad_clean.evt
Size (bytes)960,920,640849,663,360
Size916.4 MB 810.3 MB
Events in quadrant A6,014,3365,016,797
Events in quadrant B5,659,3724,959,895
Events in quadrant C5,834,7224,818,216
Events in quadrant D4,762,1944,112,825

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01570
B01570
C01570
D01570

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020300
B020320
C020320
D020280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02064490
B02414720
C02087640
D03260750

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9954612241.229582%
B9955142244.243051%
C9952418811.889996%
D995561438714.451163%

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 129563 99590 0 0 0.00% 0.00%
B 129562 99500 0 0 0.00% 0.00%
C 129563 99565 0 0 0.00% 0.00%
D 129563 99459 0 0 0.00% 0.00%

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 0 29 5922 11.53 1561 1459 387.0
A 7 110 4814 8.67 1561 1459 387.0
A 0 30 4536 7.95 1561 1459 387.0
B 2 9 4597 10.66 1497 1424 297.5
B 2 8 3883 8.26 1497 1424 297.5
B 5 128 3741 7.79 1497 1424 297.5
C 12 241 4029 6.67 1541 1440 388.0
C 9 242 3907 6.36 1541 1440 388.0
C 3 126 3884 6.3 1541 1440 388.0
D 3 14 3427 6.07 1358 1230 361.8
D 7 3 3337 5.82 1358 1230 361.8
D 6 231 3323 5.78 1358 1230 361.8

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