ASTROSAT CZTI

Data Quality Report

Orbit 59036

Creation date: 2026-08-27T23:45:18.573176
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_004T02_9000006600_59036cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59036cztM0_level2_quad_clean.evt
Size (bytes)865,765,44073,765,440
Size825.7 MB 70.3 MB
Events in quadrant A3,602,776628,625
Events in quadrant B6,792,543556,513
Events in quadrant C6,651,151514,174
Events in quadrant D14,511,25992,779

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150981
B0244012
C0241631
D0474051

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63232383.764036%
B6323147823.374980%
C6323120118.994148%
D6323538985.228531%

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 7513 6324 169 169 2.25% 2.67%
B 7513 6324 1016 1016 13.52% 16.07%
C 7513 6324 1149 1149 15.29% 18.17%
D 7512 6322 4781 4781 63.64% 75.62%

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 15 233 507723 2911.45 712 698 174.1
A 14 238 113997 650.59 712 698 174.1
A 3 14 57012 323.37 712 698 174.1
B 2 249 3386956 24789.49 646 622 136.6
B 4 236 575215 4206.28 646 622 136.6
B 5 185 114453 833.29 646 622 136.6
C 15 219 3393497 18889.66 646 640 179.6
C 12 252 665313 3700.55 646 640 179.6
C 6 13 21752 117.54 646 640 179.6
D 12 1 13167899 195710.19 232 221 67.3
D 2 62 147110 2183.2 232 221 67.3
D 2 249 68747 1018.5 232 221 67.3

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

TCT plots

Parameter TCT0 TCT_healed
Tct