ASTROSAT CZTI

Data Quality Report

Orbit 58338

Creation date: 2026-07-10T12:25:38.221112
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_044T03_9000006588_58338cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58338cztM0_level2_quad_clean.evt
Size (bytes)372,856,32099,115,200
Size355.6 MB 94.5 MB
Events in quadrant A3,082,466648,445
Events in quadrant B3,555,587696,168
Events in quadrant C3,434,737621,788
Events in quadrant D3,228,458586,209

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136122
B0147812
C0147523
D0141442

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6430931.446345%
B64301722.674961%
C64291432.224296%
D6429741.151034%

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 7590 6431 8 8 0.11% 0.12%
B 7590 6431 30 30 0.40% 0.47%
C 7589 6430 96 96 1.26% 1.49%
D 7589 6430 34 34 0.45% 0.53%

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 13 248 58414 314.47 739 718 183.5
A 2 143 28128 149.4 739 718 183.5
A 0 117 19466 102.19 739 718 183.5
B 8 234 153697 985.66 728 702 155.2
B 4 171 118342 757.88 728 702 155.2
B 5 185 70588 450.23 728 702 155.2
C 15 198 267911 1369.15 711 705 195.2
C 6 223 95199 484.18 711 705 195.2
C 12 252 76516 388.45 711 705 195.2
D 2 31 107031 531.28 707 676 200.2
D 11 176 90338 447.89 707 676 200.2
D 12 110 80737 399.93 707 676 200.2

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