ASTROSAT CZTI

Data Quality Report

Orbit 53246

Creation date: 2025-08-01T20:53:50.867442
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/AS1C09_011T08_9000006492_53246cztM0_level2.fits modeM0/AS1C09_011T08_9000006492_53246cztM0_level2_quad_clean.evt
Size (bytes)1,487,931,840174,686,400
Size1.4 GB 166.6 MB
Events in quadrant A9,495,1251,225,142
Events in quadrant B10,377,9411,369,541
Events in quadrant C25,523,603572,041
Events in quadrant D8,598,8771,154,032

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0381381
B0405531
C0856281
D0353851

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02820
B02820
C02820
D02820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A140179746.948705%
B140165063.610160%
C14016768654.837329%
D140173212.290076%

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 14282 14018 734 734 5.14% 5.24%
B 14281 14017 282 282 1.97% 2.01%
C 14281 14016 7128 7128 49.91% 50.86%
D 14282 14018 179 179 1.25% 1.28%

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 7 206 1642219 4606.56 1435 1402 356.2
A 14 254 392257 1097.32 1435 1402 356.2
A 0 8 339287 948.61 1435 1402 356.2
B 12 33 2351894 7746.06 1433 1381 303.4
B 2 249 670502 2205.07 1433 1381 303.4
B 12 17 383222 1258.35 1433 1381 303.4
C 15 165 18205129 75403.26 873 866 241.4
C 15 224 1203175 4980.04 873 866 241.4
C 15 198 761760 3151.67 873 866 241.4
D 0 18 902048 2261.48 1412 1348 398.3
D 2 37 404446 1012.1 1412 1348 398.3
D 10 172 272311 680.33 1412 1348 398.3

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