ASTROSAT CZTI

Data Quality Report

Orbit 56293

Creation date: 2026-02-22T21:57:08.592899
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_049T01_9000006552_56293cztM0_level2.fits modeM0/AS1A14_049T01_9000006552_56293cztM0_level2_quad_clean.evt
Size (bytes)868,204,80085,662,720
Size828.0 MB 81.7 MB
Events in quadrant A16,673,228129,710
Events in quadrant B3,912,041729,845
Events in quadrant C5,313,930628,360
Events in quadrant D5,680,291604,329

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0544740
B0169620
C0211460
D0218200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7200620586.180556%
B72001782.472222%
C72005067.027778%
D72003795.263889%

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 7199 7199 5783 5783 80.33% 80.33%
B 7200 7200 110 110 1.53% 1.53%
C 7200 7200 455 455 6.32% 6.32%
D 7200 7200 455 455 6.32% 6.32%

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 10983859 113435.65 379 370 96.8
A 7 64 1748748 18056.96 379 370 96.8
A 9 250 555702 5735.38 379 370 96.8
B 5 185 410504 2516.76 757 730 162.8
B 0 231 118181 721.36 757 730 162.8
B 0 213 73136 444.71 757 730 162.8
C 5 250 631102 3147.42 719 710 200.3
C 13 3 531926 2652.26 719 710 200.3
C 12 94 508684 2536.22 719 710 200.3
D 2 249 975878 4668.25 732 699 208.9
D 15 115 646219 3090.15 732 699 208.9
D 8 129 584127 2792.91 732 699 208.9

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