ASTROSAT CZTI

Data Quality Report

Orbit 58556

Creation date: 2026-07-25T03:11:40.686804
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_044T04_9000006592_58556cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58556cztM0_level2_quad_clean.evt
Size (bytes)445,544,64096,560,640
Size424.9 MB 92.1 MB
Events in quadrant A5,132,743611,710
Events in quadrant B3,727,590676,563
Events in quadrant C2,980,723622,313
Events in quadrant D4,154,533566,793

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0196984
B0154023
C0134843
D0167543

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63914907.667032%
B63922784.349186%
C6392370.578849%
D63922073.238423%

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 8791 6394 382 382 4.35% 5.97%
B 8792 6393 138 138 1.57% 2.16%
C 8792 6394 16 16 0.18% 0.25%
D 8792 6395 174 174 1.98% 2.72%

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 10 248 2225144 12741.65 701 682 174.6
A 10 17 71242 404.17 701 682 174.6
A 13 248 32974 184.97 701 682 174.6
B 6 255 270855 1808.86 700 674 149.4
B 8 234 159149 1060.99 700 674 149.4
B 5 185 130552 869.53 700 674 149.4
C 12 252 41987 212.0 707 701 194.7
C 12 249 34809 175.14 707 701 194.7
C 4 5 22878 113.88 707 701 194.7
D 3 12 428751 2167.43 692 661 197.5
D 2 207 274132 1384.59 692 661 197.5
D 2 31 226415 1143.0 692 661 197.5

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