ASTROSAT CZTI

Data Quality Report

Orbit 55260

Creation date: 2025-12-15T10:12:23.322691
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_009T01_9000006534_55260cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55260cztM0_level2_quad_clean.evt
Size (bytes)401,817,600103,394,880
Size383.2 MB 98.6 MB
Events in quadrant A3,520,096660,204
Events in quadrant B3,237,200718,020
Events in quadrant C3,952,328642,721
Events in quadrant D3,603,370607,685

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160322
B0153402
C0171432
D0161212

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72061211.679156%
B7206871.207327%
C72061562.164863%
D7207660.915776%

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 8871 7208 61 61 0.69% 0.85%
B 8871 7208 37 37 0.42% 0.51%
C 8871 7208 119 119 1.34% 1.65%
D 8872 7209 66 66 0.74% 0.92%

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 4 249 401836 2175.35 746 726 184.4
A 7 243 86170 463.39 746 726 184.4
A 11 191 44233 235.95 746 726 184.4
B 5 185 163058 1005.56 748 720 161.4
B 10 245 57915 354.28 748 720 161.4
B 0 182 27395 165.23 748 720 161.4
C 13 3 403240 1973.48 739 732 204.0
C 12 250 180334 880.58 739 732 204.0
C 10 22 174123 850.13 739 732 204.0
D 8 160 212209 1021.4 733 703 207.1
D 2 31 114957 551.75 733 703 207.1
D 3 12 102034 489.35 733 703 207.1

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