ASTROSAT CZTI

Data Quality Report

Orbit 57134

Creation date: 2026-04-20T12:09:13.073289
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_083T10_9000006566_57134cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57134cztM0_level2_quad_clean.evt
Size (bytes)773,012,16081,858,240
Size737.2 MB 78.1 MB
Events in quadrant A3,001,133657,496
Events in quadrant B3,722,853692,262
Events in quadrant C8,167,130374,821
Events in quadrant D13,192,609277,783

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141112
B0159692
C0289998
D0439382

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6837771.126225%
B68373054.461021%
C6836284941.676419%
D6836381355.778233%

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 8807 6839 6 6 0.07% 0.09%
B 8807 6838 95 95 1.08% 1.39%
C 8805 6835 2240 2240 25.44% 32.77%
D 8805 6835 3864 3864 43.88% 56.53%

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 10 251 34364 181.02 751 731 185.8
A 5 113 27969 146.6 751 731 185.8
A 13 248 14200 72.49 751 731 185.8
B 10 16 546763 3472.06 739 711 157.3
B 5 185 88023 555.17 739 711 157.3
B 0 213 33430 208.04 739 711 157.3
C 15 198 5946467 42532.02 512 507 139.8
C 12 252 125084 891.11 512 507 139.8
C 14 254 59849 424.48 512 507 139.8
D 15 142 10111480 63965.8 560 534 158.1
D 12 33 608401 3845.6 560 534 158.1
D 8 240 83748 526.44 560 534 158.1

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