ASTROSAT CZTI

Data Quality Report

Orbit 53047

Creation date: 2025-07-19T11:01:54.786918
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_011T07_9000006488_53047cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53047cztM0_level2_quad_clean.evt
Size (bytes)2,725,899,840329,051,520
Size2.5 GB 313.8 MB
Events in quadrant A37,794,9661,615,699
Events in quadrant B15,193,7272,503,750
Events in quadrant C25,237,6872,014,503
Events in quadrant D20,743,3502,099,143

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05120
B05120
C05120
D05120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01297404
B0627904
C0926884
D0794385

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A25120856334.088376%
B251208493.379777%
C25120377515.027866%
D2511920148.017835%

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 29274 25122 8087 8087 27.63% 32.19%
B 29274 25122 582 582 1.99% 2.32%
C 29274 25123 3818 3818 13.04% 15.20%
D 29273 25122 1871 1871 6.39% 7.45%

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 9 191 18786303 33504.43 2253 2204 560.6
A 7 206 7594673 13542.38 2253 2204 560.6
A 15 174 1458098 2596.82 2253 2204 560.6
B 10 44 834806 1556.13 2552 2464 534.9
B 10 63 671270 1250.39 2552 2464 534.9
B 4 81 665038 1238.73 2552 2464 534.9
C 1 241 7614873 11789.99 2362 2340 645.7
C 15 224 3712451 5746.07 2362 2340 645.7
C 7 80 1633042 2525.57 2362 2340 645.7
D 12 17 4978944 7020.8 2476 2361 708.8
D 15 78 1371304 1931.26 2476 2361 708.8
D 3 224 882164 1241.2 2476 2361 708.8

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