ASTROSAT CZTI

Data Quality Report

Orbit 56695

Creation date: 2026-03-21T22:07:31.754762
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_56695cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56695cztM0_level2_quad_clean.evt
Size (bytes)479,600,64085,685,760
Size457.4 MB 81.7 MB
Events in quadrant A3,318,157586,239
Events in quadrant B3,000,364630,073
Events in quadrant C7,525,707425,640
Events in quadrant D3,436,390528,318

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141941
B0133151
C0267501
D0146091

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60731662.733410%
B60741432.354297%
C6074166227.362529%
D60741382.271979%

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 7178 6074 97 97 1.35% 1.60%
B 7179 6075 56 56 0.78% 0.92%
C 7179 6075 1535 1535 21.38% 25.27%
D 7179 6075 98 98 1.37% 1.61%

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 3 62 381668 2373.51 649 633 160.5
A 4 249 108765 673.57 649 633 160.5
A 4 95 106129 657.15 649 633 160.5
B 8 128 203513 1465.81 642 620 138.4
B 10 247 57142 408.35 642 620 138.4
B 0 216 37766 268.36 642 620 138.4
C 15 230 4007140 26705.55 545 538 150.0
C 13 3 815840 5434.3 545 538 150.0
C 9 38 340861 2268.38 545 538 150.0
D 8 129 246592 1372.01 625 596 179.3
D 10 199 225506 1254.41 625 596 179.3
D 2 249 120189 667.02 625 596 179.3

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