ASTROSAT CZTI

Data Quality Report

Orbit 52579

Creation date: 2025-06-17T23:06:20.616307
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_011T06_9000006478_52579cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52579cztM0_level2_quad_clean.evt
Size (bytes)766,627,200112,870,080
Size731.1 MB 107.6 MB
Events in quadrant A4,470,357775,144
Events in quadrant B6,144,129803,211
Events in quadrant C6,185,351709,472
Events in quadrant D10,940,038556,309

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190832
B0240272
C0239917
D0382042

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82482232.703686%
B82484034.886033%
C82475977.238996%
D8248206124.987876%

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 9573 8249 114 114 1.19% 1.38%
B 9573 8249 172 172 1.80% 2.09%
C 9572 8248 460 460 4.81% 5.58%
D 9573 8248 1947 1947 20.34% 23.61%

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 4 249 268980 1220.78 887 866 219.6
A 12 3 246200 1117.05 887 866 219.6
A 3 114 121637 549.89 887 866 219.6
B 7 0 1152135 6348.04 865 836 181.4
B 4 171 331901 1825.43 865 836 181.4
B 10 44 246855 1356.5 865 836 181.4
C 13 3 1590457 6841.07 842 836 232.4
C 15 248 480626 2064.82 842 836 232.4
C 15 224 227861 977.02 842 836 232.4
D 6 42 3314546 15023.22 769 734 220.6
D 15 125 1774341 8040.68 769 734 220.6
D 11 245 827519 3748.24 769 734 220.6

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