ASTROSAT CZTI

Data Quality Report

Orbit 57864

Creation date: 2026-06-08T14:12:46.965386
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_125T11_9000006582_57864cztM0_level2.fits modeM0/AS1A14_125T11_9000006582_57864cztM0_level2_quad_clean.evt
Size (bytes)710,706,24099,020,160
Size677.8 MB 94.4 MB
Events in quadrant A3,406,141711,437
Events in quadrant B3,697,595759,037
Events in quadrant C13,623,046369,598
Events in quadrant D4,992,877630,351

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158160
B0166190
C0457280
D0200750

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7582190.250594%
B75821011.332102%
C7582391751.661831%
D7582831.094698%

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 7582 7582 13 13 0.17% 0.17%
B 7582 7582 41 41 0.54% 0.54%
C 7581 7581 3649 3649 48.13% 48.13%
D 7582 7582 74 74 0.98% 0.98%

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 7 64 229173 1152.41 803 782 198.2
A 3 128 29618 145.5 803 782 198.2
A 4 44 18798 90.9 803 782 198.2
B 0 245 161492 952.74 792 761 168.7
B 5 185 160086 944.41 792 761 168.7
B 10 246 84012 493.47 792 761 168.7
C 9 38 6669866 38863.64 632 626 171.6
C 15 224 4088911 23823.65 632 626 171.6
C 6 223 133929 776.8 632 626 171.6
D 12 110 1136504 5213.74 776 741 217.8
D 3 12 202177 924.7 776 741 217.8
D 3 224 116761 532.59 776 741 217.8

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