ASTROSAT CZTI

Data Quality Report

Orbit 58366

Creation date: 2026-07-12T08:08:55.214411
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_044T03_9000006588_58366cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58366cztM0_level2_quad_clean.evt
Size (bytes)407,733,120100,923,840
Size388.8 MB 96.2 MB
Events in quadrant A3,141,587660,880
Events in quadrant B4,768,449699,992
Events in quadrant C3,378,486636,054
Events in quadrant D3,289,227597,395

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141612
B0186442
C0149182
D0145662

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6622580.875868%
B66222664.016913%
C66221161.751737%
D6622590.890969%

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 7817 6623 32 32 0.41% 0.48%
B 7817 6623 136 136 1.74% 2.05%
C 7817 6623 96 96 1.23% 1.45%
D 7817 6623 48 48 0.61% 0.72%

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 2 143 83774 454.41 734 714 182.8
A 13 248 53532 288.96 734 714 182.8
A 10 251 42963 231.14 734 714 182.8
B 10 128 1028177 6672.87 724 697 154.0
B 5 172 482777 3130.82 724 697 154.0
B 0 153 58585 375.95 724 697 154.0
C 4 5 387427 1974.27 714 705 195.9
C 14 245 79516 402.34 714 705 195.9
C 12 249 49090 247.01 714 705 195.9
D 2 31 181216 899.25 706 674 200.8
D 3 12 144720 717.47 706 674 200.8
D 11 129 63947 315.15 706 674 200.8

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