ASTROSAT CZTI

Data Quality Report

Orbit 56696

Creation date: 2026-03-21T23:54:37.179439
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_083T06_9000006558_56696cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56696cztM0_level2_quad_clean.evt
Size (bytes)470,016,00086,132,160
Size448.2 MB 82.1 MB
Events in quadrant A3,585,827581,615
Events in quadrant B3,259,704634,945
Events in quadrant C6,558,365444,766
Events in quadrant D3,518,877519,866

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150811
B0141611
C0240781
D0149993

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61142153.516519%
B61141392.273471%
C6115133021.749796%
D61141722.813216%

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 7269 6115 144 144 1.98% 2.35%
B 7269 6115 43 43 0.59% 0.70%
C 7270 6116 1189 1189 16.35% 19.44%
D 7269 6115 140 140 1.93% 2.29%

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 4 249 429927 2698.01 646 630 159.1
A 3 62 331428 2078.98 646 630 159.1
A 7 64 73234 456.3 646 630 159.1
B 4 236 482540 3483.39 643 620 138.3
B 10 247 37823 268.91 643 620 138.3
B 10 16 28089 198.55 643 620 138.3
C 15 230 3154556 20674.35 555 549 152.6
C 6 223 559310 3662.65 555 549 152.6
C 13 3 306747 2007.11 555 549 152.6
D 6 239 461963 2633.48 614 587 175.2
D 2 249 176120 1001.92 614 587 175.2
D 8 240 118990 675.83 614 587 175.2

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