ASTROSAT CZTI

Data Quality Report

Orbit 57200

Creation date: 2026-04-28T17:36:10.871518
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_070T08_9000006568_57200cztM0_level2.fits modeM0/AS1A14_070T08_9000006568_57200cztM0_level2_quad_clean.evt
Size (bytes)639,763,20083,263,680
Size610.1 MB 79.4 MB
Events in quadrant A2,842,303611,707
Events in quadrant B3,798,183631,752
Events in quadrant C5,930,011524,409
Events in quadrant D10,617,487308,945

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130891
B0158431
C0220811
D0359241

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6363400.628634%
B63623355.265640%
C636280912.716127%
D6362300847.280729%

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 7298 6363 4 4 0.05% 0.06%
B 7297 6362 190 190 2.60% 2.99%
C 7296 6361 790 790 10.83% 12.42%
D 7297 6362 2985 2985 40.91% 46.92%

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 14 184284 1092.93 681 663 168.0
A 13 254 10216 56.86 681 663 168.0
A 3 137 8238 45.09 681 663 168.0
B 5 185 851047 6015.08 657 633 141.4
B 0 183 103461 727.31 657 633 141.4
B 10 16 98276 690.64 657 633 141.4
C 15 224 3314079 19528.66 616 610 169.7
C 12 254 54508 317.66 616 610 169.7
C 14 254 51860 302.05 616 610 169.7
D 12 33 8065587 59498.57 470 447 135.6
D 2 249 186393 1371.77 470 447 135.6
D 12 3 132638 975.21 470 447 135.6

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