ASTROSAT CZTI

Data Quality Report

Orbit 59224

Creation date: 2026-09-08T01:15:24.193723
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/AS1T05_271T01_9000006604_59224cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59224cztM0_level2_quad_clean.evt
Size (bytes)462,222,72091,546,560
Size440.8 MB 87.3 MB
Events in quadrant A3,245,021627,924
Events in quadrant B3,003,241679,596
Events in quadrant C4,266,507563,816
Events in quadrant D6,131,397484,236

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014266516
B013365337
C017668933
D023104742

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0201
C0202
D0202

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01262
B01252
C01262
D01264

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59771542.576543%
B59891372.287527%
C59294858.180132%
D594799216.680679%

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 8824 6089 53 53 0.60% 0.87%
B 8825 6103 25 25 0.28% 0.41%
C 8826 6065 356 356 4.03% 5.87%
D 8826 6076 770 770 8.72% 12.67%

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 10 251 227607 1319.61 700 683 172.0
A 3 14 109343 631.88 700 683 172.0
A 14 238 94611 546.21 700 683 172.0
B 4 201 50298 333.15 698 671 149.0
B 4 236 49219 325.9 698 671 149.0
B 10 247 48638 322.0 698 671 149.0
C 5 250 606151 3343.0 666 661 181.1
C 12 252 388923 2143.65 666 661 181.1
C 15 147 230657 1269.84 666 661 181.1
D 12 110 2471334 13718.03 643 617 180.1
D 11 129 467186 2590.51 643 617 180.1
D 7 238 411265 2280.02 643 617 180.1

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