ASTROSAT CZTI

Data Quality Report

Orbit 56924

Creation date: 2026-04-06T09:19:56.166190
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_083T14_9000006564_56924cztM0_level2.fits modeM0/AS1A14_083T14_9000006564_56924cztM0_level2_quad_clean.evt
Size (bytes)850,530,24078,370,560
Size811.1 MB 74.7 MB
Events in quadrant A4,573,759639,231
Events in quadrant B5,639,923631,299
Events in quadrant C3,347,048615,008
Events in quadrant D17,382,9643,197

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0188142
B0216272
C0152702
D0562352

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69512383.423968%
B695281811.766398%
C6952911.308976%
D6952692499.597238%

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 8726 6951 151 151 1.73% 2.17%
B 8727 6953 522 522 5.98% 7.51%
C 8727 6954 52 52 0.60% 0.75%
D 8726 6951 6789 6789 77.80% 97.67%

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 7 64 1363870 7733.94 718 701 176.3
A 10 251 353905 2003.9 718 701 176.3
A 11 31 23559 129.68 718 701 176.3
B 5 172 1318101 9095.65 680 654 144.8
B 10 16 816488 5632.51 680 654 144.8
B 5 185 494712 3410.97 680 654 144.8
C 13 3 409121 2104.04 711 702 194.1
C 14 254 112808 577.53 711 702 194.1
C 9 237 21887 109.14 711 702 194.1
D 12 33 15392249 193995.04 274 262 79.3
D 8 160 458085 5770.24 274 262 79.3
D 8 240 124999 1572.14 274 262 79.3

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