ASTROSAT CZTI

Data Quality Report

Orbit 57956

Creation date: 2026-06-14T19:20:19.161331
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_9000006584_57956cztM0_level2.fits modeM0/AS1A14_031T01_9000006584_57956cztM0_level2_quad_clean.evt
Size (bytes)517,847,04097,197,120
Size493.9 MB 92.7 MB
Events in quadrant A3,116,708652,482
Events in quadrant B3,939,627677,014
Events in quadrant C4,297,892610,407
Events in quadrant D7,292,511534,266

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141591
B0162271
C0175151
D0264861

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6728821.218787%
B67273314.920470%
C67281992.957788%
D672880011.890606%

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 7663 6728 11 11 0.14% 0.16%
B 7662 6728 194 194 2.53% 2.88%
C 7663 6729 122 122 1.59% 1.81%
D 7663 6729 653 653 8.52% 9.70%

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 64 114518 608.68 752 732 186.9
A 3 245 31140 162.66 752 732 186.9
A 3 14 29476 153.76 752 732 186.9
B 10 246 631034 4086.39 723 696 154.3
B 5 185 58533 374.95 723 696 154.3
B 6 51 58177 372.64 723 696 154.3
C 15 224 803895 4053.92 718 711 198.1
C 6 223 548300 2763.85 718 711 198.1
C 14 254 58345 290.9 718 711 198.1
D 12 110 2711565 13615.21 703 673 199.1
D 2 249 797196 4000.46 703 673 199.1
D 8 160 377174 1890.94 703 673 199.1

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