ASTROSAT CZTI

Data Quality Report

Orbit 20260613_A14_031T01_9000006584_level2

Creation date: 2026-07-03T22:18:00.474152
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/AS1A14_031T01_9000006584cztM0_level2.fits modeM0/AS1A14_031T01_9000006584cztM0_level2_quad_clean.evt
Size (bytes)3,280,576,3201,046,744,640
Size3.1 GB 998.3 MB
Events in quadrant A19,891,5101,407,799
Events in quadrant B18,098,2521,412,951
Events in quadrant C18,933,2101,326,159
Events in quadrant D15,651,029807,557

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04700
B04710
C04710
D04710

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09759070
B011187300
C010917850
D014313290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A079190
B079200
C079180
D079200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A390111196835.045487%
B390122323408.289714%
C390102272496.985096%
D3901126103215.644738%

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 862944 387661 0 0 0.00% 0.00%
B 862944 387543 0 0 0.00% 0.00%
C 862945 386762 0 0 0.00% 0.00%
D 862945 387159 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 14 188 22028 9.83 5206 4767 1755.6
A 9 255 19625 8.46 5206 4767 1755.6
A 14 204 18333 7.73 5206 4767 1755.6
B 2 9 21026 14.85 4778 4504 1112.2
B 2 8 18554 12.63 4778 4504 1112.2
B 3 25 15233 9.65 4778 4504 1112.2
C 15 175 15257 6.18 5031 4545 1734.4
C 2 31 14905 5.97 5031 4545 1734.4
C 7 221 14890 5.96 5031 4545 1734.4
D 6 218 18943 9.97 4467 3950 1503.7
D 15 11 15350 7.58 4467 3950 1503.7
D 8 12 14690 7.14 4467 3950 1503.7

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