ASTROSAT CZTI

Data Quality Report

Orbit 58179

Creation date: 2026-06-29T22:42:21.467913
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_042T02_9000006586_58179cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58179cztM0_level2_quad_clean.evt
Size (bytes)599,492,16099,878,400
Size571.7 MB 95.3 MB
Events in quadrant A3,321,755701,337
Events in quadrant B6,018,376678,134
Events in quadrant C3,840,053640,609
Events in quadrant D8,481,921528,576

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144172
B0225412
C0162432
D0301312

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68191261.847778%
B681988813.022437%
C68193735.470010%
D6819130019.064379%

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 7954 6821 10 10 0.13% 0.15%
B 7954 6821 571 571 7.18% 8.37%
C 7954 6821 241 241 3.03% 3.53%
D 7954 6821 1231 1231 15.48% 18.05%

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 13 248 137701 694.35 805 784 197.2
A 4 3 19212 93.45 805 784 197.2
A 3 14 15074 72.47 805 784 197.2
B 2 249 1505110 9354.09 747 720 160.8
B 10 128 1100698 6839.51 747 720 160.8
B 0 79 59089 362.93 747 720 160.8
C 15 208 688537 3365.38 752 746 204.4
C 15 201 70221 339.94 752 746 204.4
C 14 245 53792 259.56 752 746 204.4
D 12 110 4242252 20389.49 737 705 208.0
D 0 160 383885 1841.98 737 705 208.0
D 7 222 302763 1452.02 737 705 208.0

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