ASTROSAT CZTI

Data Quality Report

Orbit 58078

Creation date: 2026-06-22T23:09:41.826639
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_031T01_9000006584_58078cztM0_level2.fits modeM0/AS1A14_031T01_9000006584_58078cztM0_level2_quad_clean.evt
Size (bytes)426,349,44086,924,160
Size406.6 MB 82.9 MB
Events in quadrant A2,895,854579,449
Events in quadrant B4,847,436598,271
Events in quadrant C3,070,626545,495
Events in quadrant D4,513,504499,739

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129261
B0183801
C0133911
D0174431

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5850550.940171%
B58503245.538462%
C5851771.316014%
D58512924.990600%

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 6985 5851 38 38 0.54% 0.65%
B 6985 5851 243 243 3.48% 4.15%
C 6986 5852 63 63 0.90% 1.08%
D 6986 5852 249 249 3.56% 4.25%

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 311346 1928.14 645 629 161.1
A 13 248 61774 379.43 645 629 161.1
A 3 14 19116 114.72 645 629 161.1
B 10 128 1946638 14218.73 627 604 136.9
B 0 153 109336 794.45 627 604 136.9
B 2 249 79960 579.82 627 604 136.9
C 12 252 204384 1196.52 618 611 170.3
C 15 201 193373 1131.86 618 611 170.3
C 9 38 86448 504.02 618 611 170.3
D 12 110 914874 5333.01 605 579 171.4
D 8 160 739582 4310.54 605 579 171.4
D 3 224 214267 1246.42 605 579 171.4

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