ASTROSAT CZTI

Data Quality Report

Orbit 55209

Creation date: 2025-12-12T00:31:55.518172
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_022T16_9000006532_55209cztM0_level2.fits modeM0/AS1A14_022T16_9000006532_55209cztM0_level2_quad_clean.evt
Size (bytes)501,451,20094,665,600
Size478.2 MB 90.3 MB
Events in quadrant A3,065,610644,785
Events in quadrant B3,070,937681,054
Events in quadrant C6,346,625537,736
Events in quadrant D5,558,522536,329

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139591
B0141391
C0235031
D0212541

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6695430.642270%
B6696721.075269%
C669694114.053166%
D66966008.960573%

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 7575 6696 8 8 0.11% 0.12%
B 7576 6696 21 21 0.28% 0.31%
C 7576 6697 822 822 10.85% 12.27%
D 7576 6697 460 460 6.07% 6.87%

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 8 111704 622.62 722 707 178.3
A 12 115 56065 310.52 722 707 178.3
A 4 3 31772 174.25 722 707 178.3
B 10 247 114666 743.7 710 684 153.3
B 2 249 57226 368.92 710 684 153.3
B 4 81 42458 272.56 710 684 153.3
C 12 254 2274655 12515.02 658 650 181.7
C 6 13 689483 3791.0 658 650 181.7
C 14 254 409113 2247.98 658 650 181.7
D 2 249 1213238 6314.85 675 645 192.0
D 11 129 1187614 6181.41 675 645 192.0
D 7 96 187268 971.88 675 645 192.0

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