ASTROSAT CZTI

Data Quality Report

Orbit 58421

Creation date: 2026-07-16T02:09:03.959257
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_58421cztM0_level2.fits modeM0/AS1A14_045T01_9000006590_58421cztM0_level2_quad_clean.evt
Size (bytes)525,009,60093,735,360
Size500.7 MB 89.4 MB
Events in quadrant A3,307,163627,300
Events in quadrant B4,366,235636,474
Events in quadrant C6,760,310564,670
Events in quadrant D4,492,090552,424

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146692
B0174822
C0247722
D0178982

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65531071.632840%
B65534627.050206%
C65535508.393102%
D65533375.142683%

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 7543 6554 77 77 1.02% 1.17%
B 7543 6554 375 375 4.97% 5.72%
C 7543 6554 354 354 4.69% 5.40%
D 7543 6554 275 275 3.65% 4.20%

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 3 14 236878 1332.44 711 692 177.3
A 4 249 112214 629.15 711 692 177.3
A 1 7 67263 375.56 711 692 177.3
B 5 185 967101 6614.9 682 658 146.1
B 4 201 187332 1277.71 682 658 146.1
B 6 255 179820 1226.29 682 658 146.1
C 9 38 3573583 19173.53 673 667 186.3
C 5 10 130163 694.92 673 667 186.3
C 2 12 120021 640.5 673 667 186.3
D 8 240 1292959 6721.98 674 645 192.3
D 2 249 128558 665.34 674 645 192.3
D 12 248 128056 662.73 674 645 192.3

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