ASTROSAT CZTI

Data Quality Report

Orbit 57960

Creation date: 2026-06-15T00:29:00.117651
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_031T01_9000006584_57960cztM0_level2.fits modeM0/AS1A14_031T01_9000006584_57960cztM0_level2_quad_clean.evt
Size (bytes)515,661,12094,613,760
Size491.8 MB 90.2 MB
Events in quadrant A2,947,539657,831
Events in quadrant B3,381,276697,486
Events in quadrant C3,764,265610,604
Events in quadrant D8,493,567448,612

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133452
B0144792
C0158172
D0296782

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6451350.542552%
B64511362.108200%
C64511732.681755%
D6451172326.709037%

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 7646 6452 2 2 0.03% 0.03%
B 7646 6452 64 64 0.84% 0.99%
C 7646 6452 121 121 1.58% 1.88%
D 7646 6452 1670 1670 21.84% 25.88%

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 42410 229.74 730 710 181.5
A 7 64 30703 165.24 730 710 181.5
A 3 245 19840 105.4 730 710 181.5
B 10 247 142521 927.33 715 690 152.9
B 7 252 115725 752.13 715 690 152.9
B 15 32 57554 371.79 715 690 152.9
C 15 224 866971 4560.76 690 684 189.9
C 1 16 53184 276.4 690 684 189.9
C 14 254 51643 268.29 690 684 189.9
D 12 110 5225026 28722.61 637 608 181.9
D 2 249 388137 2130.54 637 608 181.9
D 8 240 139393 763.01 637 608 181.9

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