ASTROSAT CZTI

Data Quality Report

Orbit 53629

Creation date: 2025-08-28T10:58:00.185375
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_004T05_9000006502_53629cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53629cztM0_level2_quad_clean.evt
Size (bytes)545,279,04056,030,400
Size520.0 MB 53.4 MB
Events in quadrant A3,980,588395,012
Events in quadrant B3,020,279437,400
Events in quadrant C7,276,399248,933
Events in quadrant D5,573,522312,504

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0860
B0860
C0860
D0860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147931
B0118621
C0244952
D0195161

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A429956813.212375%
B42993027.024890%
C4298190144.229874%
D4298102823.918101%

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 4303 4303 518 518 12.04% 12.04%
B 4303 4303 237 237 5.51% 5.51%
C 4303 4303 1885 1885 43.81% 43.81%
D 4303 4303 1098 1098 25.52% 25.52%

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 95 1439282 12580.32 458 448 114.4
A 15 174 301427 2631.58 458 448 114.4
A 3 63 233746 2039.82 458 448 114.4
B 4 206 493712 5062.36 449 434 97.4
B 15 20 250745 2568.86 449 434 97.4
B 10 247 209001 2140.46 449 434 97.4
C 1 241 3043299 31983.35 340 337 95.1
C 15 224 2233887 23475.94 340 337 95.1
C 5 10 172591 1810.49 340 337 95.1
D 8 176 2709265 23062.57 408 391 117.5
D 0 5 324879 2762.6 408 391 117.5
D 2 153 204776 1740.08 408 391 117.5

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