ASTROSAT CZTI

Data Quality Report

Orbit 58240

Creation date: 2026-07-03T21:11:53.159577
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_044T03_9000006588_58240cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58240cztM0_level2_quad_clean.evt
Size (bytes)628,179,84089,006,400
Size599.1 MB 84.9 MB
Events in quadrant A3,827,523641,428
Events in quadrant B11,120,361385,159
Events in quadrant C3,298,237625,665
Events in quadrant D4,477,924567,557

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161263
B0377523
C0150053
D0179813

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68082063.025852%
B6809331048.612131%
C68091011.483331%
D68093705.433984%

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 6953 6811 45 45 0.65% 0.66%
B 6954 6811 2496 2496 35.89% 36.65%
C 6954 6812 40 40 0.58% 0.59%
D 6954 6812 217 217 3.12% 3.19%

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 318234 1700.96 761 743 186.7
A 6 195 210170 1122.0 761 743 186.7
A 3 14 124846 664.88 761 743 186.7
B 4 206 4998119 40110.96 580 559 124.6
B 6 255 2727067 21883.25 580 559 124.6
B 8 128 334008 2676.3 580 559 124.6
C 12 249 122755 592.56 748 741 205.9
C 6 223 68791 330.49 748 741 205.9
C 12 252 55908 267.92 748 741 205.9
D 3 224 271006 1299.74 741 710 208.0
D 5 34 229940 1102.27 741 710 208.0
D 11 176 205223 983.42 741 710 208.0

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