ASTROSAT CZTI

Data Quality Report

Orbit 20220330_T05_016T01_9000005036_level2

Creation date: 2026-01-02T10:05:12.290465
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/AS1T05_016T01_9000005036cztM0_level2.fits modeM0/AS1T05_016T01_9000005036cztM0_level2_quad_clean.evt
Size (bytes)73,883,52096,168,960
Size70.5 MB 91.7 MB
Events in quadrant A465,828658,764
Events in quadrant B382,788528,654
Events in quadrant C443,288617,397
Events in quadrant D376,598538,922

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169640
B0352250
C0183020
D0284730

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8186420.513071%
B8186213326.056682%
C8186981.197166%
D81865046.156853%

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 10961 8185 0 0 0.00% 0.00%
B 10961 8150 0 0 0.00% 0.00%
C 10961 8186 0 0 0.00% 0.00%
D 10961 8177 0 0 0.00% 0.00%

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 0 29 409 9.22 121 114 32.0
A 7 110 393 8.72 121 114 32.0
A 9 19 358 7.63 121 114 32.0
B 2 9 321 10.2 101 96 22.0
B 3 80 309 9.65 101 96 22.0
B 2 8 277 8.2 101 96 22.0
C 9 233 308 6.39 117 110 31.0
C 1 65 306 6.32 117 110 31.0
C 9 242 306 6.32 117 110 31.0
D 10 189 293 6.4 107 98 30.5
D 1 3 274 5.78 107 98 30.5
D 6 67 273 5.75 107 98 30.5

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