ASTROSAT CZTI

Data Quality Report

Orbit 59102

Creation date: 2026-08-30T21:27:43.058536
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_004T02_9000006600_59102cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59102cztM0_level2_quad_clean.evt
Size (bytes)965,180,16074,430,720
Size920.5 MB 71.0 MB
Events in quadrant A3,653,298719,951
Events in quadrant B3,695,839760,241
Events in quadrant C10,966,407249,105
Events in quadrant D16,828,6412,356

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159910
B0161860
C0378270
D0550470

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7495921.227485%
B74961702.267876%
C7496490465.421558%
D7496747399.693170%

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 7495 7495 14 14 0.19% 0.19%
B 7496 7496 24 24 0.32% 0.32%
C 7496 7496 1935 1935 25.81% 25.81%
D 7496 7496 5070 5070 67.64% 67.64%

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 0 24 157266 754.19 842 820 207.4
A 4 3 57684 274.13 842 820 207.4
A 3 14 51322 243.46 842 820 207.4
B 0 186 128571 717.23 827 796 178.2
B 10 128 46123 254.43 827 796 178.2
B 0 171 39012 214.51 827 796 178.2
C 15 198 8705435 67894.07 468 466 128.2
C 12 252 156462 1216.68 468 466 128.2
C 15 182 106426 826.43 468 466 128.2
D 12 1 16403473 755556.69 70 66 21.7
D 3 12 30385 1396.52 70 66 21.7
D 2 249 24223 1112.69 70 66 21.7

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

TCT plots

Parameter TCT0 TCT_healed
Tct