ASTROSAT CZTI

Data Quality Report

Orbit 58900

Creation date: 2026-08-17T07:19:10.069674
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_004T07_9000006598_58900cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58900cztM0_level2_quad_clean.evt
Size (bytes)639,155,52096,102,720
Size609.5 MB 91.7 MB
Events in quadrant A4,169,136664,929
Events in quadrant B4,031,903697,194
Events in quadrant C4,014,967631,738
Events in quadrant D10,902,916430,414

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170903
B0169072
C0169582
D0373152

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69711171.678382%
B69722743.930006%
C69722623.757889%
D6972228932.831325%

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 8521 6973 54 54 0.63% 0.77%
B 8522 6974 123 123 1.44% 1.76%
C 8522 6974 210 210 2.46% 3.01%
D 8522 6974 2365 2365 27.75% 33.91%

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 14 238 814658 4291.64 763 744 189.7
A 3 245 175588 921.92 763 744 189.7
A 15 233 143399 752.2 763 744 189.7
B 5 172 315051 1924.78 752 723 163.3
B 4 171 269600 1646.46 752 723 163.3
B 4 201 141549 862.35 752 723 163.3
C 12 252 679000 3321.35 741 736 204.2
C 12 249 282614 1380.31 741 736 204.2
C 6 223 88608 430.3 741 736 204.2
D 12 110 7580818 39993.62 656 625 189.5
D 11 129 456707 2406.32 656 625 189.5
D 2 249 52112 271.65 656 625 189.5

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

TCT plots

Parameter TCT0 TCT_healed
Tct