ASTROSAT CZTI

Data Quality Report

Orbit 50226

Creation date: 2025-01-10T12:35:48.957249
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_003T01_9000006442_50226cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50226cztM0_level2_quad_clean.evt
Size (bytes)3,508,966,080144,829,440
Size3.3 GB 138.1 MB
Events in quadrant A27,891,9091,125,647
Events in quadrant B14,934,3481,624,353
Events in quadrant C42,887,579175,333
Events in quadrant D42,738,421165,625

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0963593
B0575053
C01401133
D01397823

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18753647634.533141%
B18754220911.778821%
C187541708591.100565%
D187541688690.039458%

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 19883 18753 6198 6198 31.17% 33.05%
B 19884 18755 1586 1586 7.98% 8.46%
C 19884 18754 15204 15204 76.46% 81.07%
D 19884 18754 15082 15082 75.85% 80.42%

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 98 13579905 31714.67 1739 1694 428.1
A 3 14 2635864 6152.64 1739 1694 428.1
A 8 8 645266 1503.19 1739 1694 428.1
B 5 185 2857571 7088.38 1904 1835 402.9
B 4 206 1187920 2944.05 1904 1835 402.9
B 3 249 987981 2447.77 1904 1835 402.9
C 15 197 21817430 103557.1 690 682 210.7
C 4 111 9792487 46478.56 690 682 210.7
C 15 127 3164554 15017.88 690 682 210.7
D 7 61 17605284 59408.85 759 717 296.3
D 15 170 3836601 12944.68 759 717 296.3
D 15 108 3367274 11360.88 759 717 296.3

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