ASTROSAT CZTI

Data Quality Report

Orbit 54568

Creation date: 2025-10-29T20:48:23.208473
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_127T09_9000006520_54568cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54568cztM0_level2_quad_clean.evt
Size (bytes)908,498,880176,155,200
Size866.4 MB 168.0 MB
Events in quadrant A7,358,2441,130,852
Events in quadrant B6,877,6831,247,501
Events in quadrant C10,050,9821,053,623
Events in quadrant D8,359,8661,024,029

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0308331
B0293601
C0387911
D0340751

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02560
B02560
C02560
D02560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A126927275.728018%
B126923232.544910%
C126929067.138355%
D126925594.404349%

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 12987 12693 458 458 3.53% 3.61%
B 12987 12693 69 69 0.53% 0.54%
C 12987 12693 710 710 5.47% 5.59%
D 12987 12693 417 417 3.21% 3.29%

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 11 3 1667231 5013.0 1349 1317 332.3
A 4 3 138948 414.15 1349 1317 332.3
A 3 14 135647 404.22 1349 1317 332.3
B 10 14 472420 1622.69 1357 1306 290.3
B 0 213 234373 802.77 1357 1306 290.3
B 10 247 158588 541.74 1357 1306 290.3
C 12 254 2468220 6952.21 1307 1296 354.8
C 13 3 979403 2756.47 1307 1296 354.8
C 9 38 696355 1958.79 1307 1296 354.8
D 3 12 1146607 3052.74 1323 1262 375.2
D 15 94 889334 2367.02 1323 1262 375.2
D 1 3 326677 867.34 1323 1262 375.2

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