ASTROSAT CZTI

Data Quality Report

Orbit 54980

Creation date: 2025-11-26T12:50:09.455844
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_014T01_9000006528_54980cztM0_level2.fits modeM0/AS1A14_014T01_9000006528_54980cztM0_level2_quad_clean.evt
Size (bytes)719,061,12077,137,920
Size685.8 MB 73.6 MB
Events in quadrant A4,018,727570,153
Events in quadrant B2,937,908653,948
Events in quadrant C4,307,880549,424
Events in quadrant D14,871,611129,400

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165141
B0133941
C0173571
D0484711

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61974186.745199%
B6198711.145531%
C61984056.534366%
D6198479077.282995%

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 7332 6198 322 322 4.39% 5.20%
B 7333 6199 27 27 0.37% 0.44%
C 7333 6199 357 357 4.87% 5.76%
D 7333 6198 4920 4920 67.09% 79.38%

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 15 32 987788 6136.74 645 629 160.9
A 0 8 296115 1836.91 645 629 160.9
A 7 190 169174 1047.77 645 629 160.9
B 10 14 93480 657.64 655 633 141.2
B 5 236 65706 460.91 655 633 141.2
B 4 81 61936 434.21 655 633 141.2
C 13 3 691000 3953.32 631 625 174.6
C 6 223 688324 3937.99 631 625 174.6
C 4 5 278930 1593.67 631 625 174.6
D 15 94 12976627 137865.87 326 311 94.1
D 11 129 143038 1516.39 326 311 94.1
D 1 31 62044 655.88 326 311 94.1

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