ASTROSAT CZTI

Data Quality Report

Orbit 58088

Creation date: 2026-06-23T15:28:24.163443
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_58088cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58088cztM0_level2_quad_clean.evt
Size (bytes)596,977,92093,798,720
Size569.3 MB 89.5 MB
Events in quadrant A3,172,798661,546
Events in quadrant B9,987,018503,198
Events in quadrant C3,473,396623,523
Events in quadrant D4,938,629579,622

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141372
B0344272
C0150303
D0192322

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67791181.740670%
B6779242135.713232%
C67781742.567129%
D67782623.865447%

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 7739 6779 2 2 0.03% 0.03%
B 7739 6779 1687 1687 21.80% 24.89%
C 7738 6778 53 53 0.68% 0.78%
D 7738 6778 131 131 1.69% 1.93%

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 6 47953 245.41 777 757 192.3
A 10 251 47355 242.3 777 757 192.3
A 3 245 26919 136.04 777 757 192.3
B 10 128 6408843 43793.6 681 655 146.3
B 5 172 494748 3376.63 681 655 146.3
B 0 63 104332 708.53 681 655 146.3
C 6 223 204637 1009.85 747 742 201.9
C 12 252 156639 772.12 747 742 201.9
C 15 201 94519 464.46 747 742 201.9
D 12 110 950784 4548.98 739 708 208.9
D 12 1 534235 2554.53 739 708 208.9
D 8 160 252951 1207.74 739 708 208.9

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