ASTROSAT CZTI

Data Quality Report

Orbit 53742

Creation date: 2025-09-04T10:52:06.331996
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_022T04_9000006506_53742cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53742cztM0_level2_quad_clean.evt
Size (bytes)1,039,222,08067,608,000
Size991.1 MB 64.5 MB
Events in quadrant A16,342,301104,441
Events in quadrant B3,152,855659,139
Events in quadrant C13,303,699263,769
Events in quadrant D5,153,001553,310

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0532231
B0144981
C0439591
D0202171

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6685580486.821242%
B6685911.361257%
C6686403460.335028%
D66853204.786836%

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 7619 6684 5761 5761 75.61% 86.19%
B 7620 6686 28 28 0.37% 0.42%
C 7621 6687 3763 3763 49.38% 56.27%
D 7620 6686 277 277 3.64% 4.14%

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 3 63 13570106 133589.36 406 397 101.6
A 3 78 559879 5507.91 406 397 101.6
A 0 8 156245 1534.27 406 397 101.6
B 4 171 148203 1006.24 682 656 146.6
B 2 136 63221 426.68 682 656 146.6
B 4 81 60061 405.13 682 656 146.6
C 1 241 7281693 60400.4 432 428 120.5
C 15 224 3213411 26652.71 432 428 120.5
C 13 3 759853 6299.67 432 428 120.5
D 2 172 1040221 5529.12 661 632 188.0
D 2 153 567124 3012.92 661 632 188.0
D 2 37 356227 1891.25 661 632 188.0

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