ASTROSAT CZTI

Data Quality Report

Orbit 53030

Creation date: 2025-07-18T08:42:39.283067
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_53030cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53030cztM0_level2_quad_clean.evt
Size (bytes)2,517,894,720124,263,360
Size2.3 GB 118.5 MB
Events in quadrant A35,086,7628,801
Events in quadrant B10,666,8811,317,801
Events in quadrant C22,265,541824,302
Events in quadrant D24,123,439654,187

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02840
B02840
C02840
D02840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01137003
B0411313
C0758153
D0813105

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A138391376699.472505%
B1384010477.565029%
C13840537738.851156%
D13839671548.522292%

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 16178 13838 13526 13526 83.61% 97.75%
B 16180 13843 806 806 4.98% 5.82%
C 16180 13841 5368 5368 33.18% 38.78%
D 16179 13839 6466 6466 39.97% 46.72%

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 33100003 362352.33 344 336 91.3
A 7 206 268349 2934.02 344 336 91.3
A 0 8 163381 1784.9 344 336 91.3
B 4 81 1591059 5335.85 1403 1358 297.9
B 10 44 1073614 3599.04 1403 1358 297.9
B 10 191 599222 2006.74 1403 1358 297.9
C 1 241 9401376 29957.85 1139 1126 313.8
C 15 224 2611888 8320.29 1139 1126 313.8
C 7 80 2441252 7776.49 1139 1126 313.8
D 2 153 6454462 20853.6 1058 1008 309.5
D 12 17 5300348 17124.21 1058 1008 309.5
D 8 176 4609430 14891.59 1058 1008 309.5

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