ASTROSAT CZTI

Data Quality Report

Orbit 58126

Creation date: 2026-06-29T15:48:48.198763
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_042T02_9000006586_58126cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58126cztM0_level2_quad_clean.evt
Size (bytes)976,697,28098,219,520
Size931.5 MB 93.7 MB
Events in quadrant A4,442,926786,060
Events in quadrant B6,555,103794,319
Events in quadrant C4,261,401754,954
Events in quadrant D20,241,92654,599

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193690
B0251330
C0187940
D0655766

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84042633.129462%
B84047538.960019%
C84041161.380295%
D8404791694.193241%

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 8404 8404 165 165 1.96% 1.96%
B 8404 8404 474 474 5.64% 5.64%
C 8404 8404 99 99 1.18% 1.18%
D 8404 8404 7087 7087 84.33% 84.33%

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 10 251 662946 2900.5 920 894 228.3
A 2 79 98513 427.68 920 894 228.3
A 3 245 56087 241.8 920 894 228.3
B 10 128 1899642 9908.4 883 848 191.6
B 5 185 478531 2492.67 883 848 191.6
B 4 201 269870 1403.83 883 848 191.6
C 15 208 306205 1253.37 894 884 243.6
C 12 252 180322 736.61 894 884 243.6
C 6 223 88355 359.08 894 884 243.6
D 12 110 17997423 141236.35 449 428 127.4
D 1 3 179493 1405.26 449 428 127.4
D 3 224 66008 514.66 449 428 127.4

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