ASTROSAT CZTI

Data Quality Report

Orbit 57585

Creation date: 2026-05-20T19:22:36.278092
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_070T08_9000006576_57585cztM0_level2.fits modeM0/AS1A14_070T08_9000006576_57585cztM0_level2_quad_clean.evt
Size (bytes)482,935,68096,932,160
Size460.6 MB 92.4 MB
Events in quadrant A2,966,628642,643
Events in quadrant B5,346,618644,633
Events in quadrant C4,746,877603,349
Events in quadrant D4,289,467571,839

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140751
B0206361
C0190401
D0174721

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67781452.139274%
B677971310.517775%
C67793795.590795%
D67793184.690957%

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 7343 6779 15 15 0.20% 0.22%
B 7344 6780 369 369 5.02% 5.44%
C 7344 6780 254 254 3.46% 3.75%
D 7344 6780 218 218 2.97% 3.22%

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 7 160 76212 419.37 729 709 180.0
A 3 14 45948 251.28 729 709 180.0
A 3 245 18233 97.34 729 709 180.0
B 2 249 2038759 13807.98 695 669 147.6
B 5 185 225588 1523.82 695 669 147.6
B 10 247 100902 679.07 695 669 147.6
C 15 224 991417 5258.43 693 687 188.4
C 12 254 773977 4104.34 693 687 188.4
C 14 254 192768 1019.5 693 687 188.4
D 2 249 426868 2133.29 702 668 199.8
D 3 224 230234 1149.07 702 668 199.8
D 8 240 228231 1139.04 702 668 199.8

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