ASTROSAT CZTI

Data Quality Report

Orbit 56581

Creation date: 2026-03-14T06:19:07.674739
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_56581cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56581cztM0_level2_quad_clean.evt
Size (bytes)442,244,16095,443,200
Size421.8 MB 91.0 MB
Events in quadrant A3,477,612637,356
Events in quadrant B3,025,963695,062
Events in quadrant C4,249,117573,028
Events in quadrant D5,107,588526,848

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151192
B0138952
C0174862
D0198412

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6561871.326017%
B6560340.518293%
C65603745.701220%
D65605137.820122%

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 7681 6562 64 64 0.83% 0.98%
B 7680 6561 4 4 0.05% 0.06%
C 7680 6561 340 340 4.43% 5.18%
D 7680 6561 457 457 5.95% 6.97%

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 490248 2789.57 700 681 175.5
A 12 3 106730 604.27 700 681 175.5
A 7 64 31112 173.4 700 681 175.5
B 10 247 45923 300.89 702 676 150.4
B 4 21 34268 223.38 702 676 150.4
B 7 252 33454 217.97 702 676 150.4
C 15 230 894575 4955.9 663 656 180.4
C 12 252 571849 3166.7 663 656 180.4
C 6 223 112638 620.83 663 656 180.4
D 6 239 1054214 5731.3 646 616 183.8
D 8 129 601239 3267.23 646 616 183.8
D 2 249 275163 1493.46 646 616 183.8

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