ASTROSAT CZTI

Data Quality Report

Orbit 57523

Creation date: 2026-05-16T15:09:13.323249
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_113T09_9000006574_57523cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57523cztM0_level2_quad_clean.evt
Size (bytes)387,172,80092,139,840
Size369.2 MB 87.9 MB
Events in quadrant A2,673,161607,731
Events in quadrant B3,507,984643,208
Events in quadrant C4,349,044566,259
Events in quadrant D3,325,021545,516

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124681
B0144261
C0172881
D0140921

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6122560.914734%
B61221943.168899%
C61223205.227050%
D61221242.025482%

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 7217 6123 0 0 0.00% 0.00%
B 7217 6123 73 73 1.01% 1.19%
C 7217 6123 178 178 2.47% 2.91%
D 7217 6123 65 65 0.90% 1.06%

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 15517 88.8 681 664 167.3
A 3 128 13497 76.72 681 664 167.3
A 4 3 9099 50.43 681 664 167.3
B 5 185 381148 2711.55 663 638 140.3
B 4 206 333234 2370.11 663 638 140.3
B 10 247 55399 390.23 663 638 140.3
C 15 224 1547547 8704.57 652 643 177.7
C 9 38 112831 631.29 652 643 177.7
C 1 16 36640 202.56 652 643 177.7
D 2 31 170066 905.74 661 629 187.1
D 8 240 129558 689.2 661 629 187.1
D 0 19 103097 547.75 661 629 187.1

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