ASTROSAT CZTI

Data Quality Report

Orbit 58379

Creation date: 2026-07-13T05:12:16.741020
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_045T01_9000006590_58379cztM0_level2.fits modeM0/AS1A14_045T01_9000006590_58379cztM0_level2_quad_clean.evt
Size (bytes)471,078,72095,212,800
Size449.3 MB 90.8 MB
Events in quadrant A3,827,436632,061
Events in quadrant B6,386,226608,802
Events in quadrant C3,373,460604,949
Events in quadrant D3,338,748578,344

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161112
B0234792
C0148502
D0144022

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65842143.250304%
B658495014.428919%
C65841622.460510%
D6584310.470838%

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 7674 6584 176 176 2.29% 2.67%
B 7674 6584 737 737 9.60% 11.19%
C 7674 6585 134 134 1.75% 2.03%
D 7674 6585 24 24 0.31% 0.36%

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 7 64 499015 2791.12 716 699 178.5
A 4 249 109986 612.13 716 699 178.5
A 12 80 106015 589.89 716 699 178.5
B 5 172 1525031 10536.08 668 642 144.7
B 6 255 967874 6685.19 668 642 144.7
B 8 128 578960 3997.14 668 642 144.7
C 4 5 430745 2256.42 695 689 190.6
C 6 223 79694 414.52 695 689 190.6
C 14 245 34268 176.18 695 689 190.6
D 11 129 292849 1476.18 694 664 197.9
D 2 249 85514 428.68 694 664 197.9
D 2 153 54048 269.71 694 664 197.9

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