ASTROSAT CZTI

Data Quality Report

Orbit 53933

Creation date: 2025-09-17T01:08:34.610426
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_057T04_9000006508_53933cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53933cztM0_level2_quad_clean.evt
Size (bytes)734,630,40083,154,240
Size700.6 MB 79.3 MB
Events in quadrant A3,482,315638,548
Events in quadrant B4,537,388661,943
Events in quadrant C6,634,857498,782
Events in quadrant D12,035,417265,261

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150612
B0180192
C0242252
D0401732

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64941412.171235%
B64933625.575235%
C6493129119.882951%
D6494372357.329843%

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 7599 6495 119 119 1.57% 1.83%
B 7598 6494 246 246 3.24% 3.79%
C 7598 6494 1285 1285 16.91% 19.79%
D 7599 6495 3491 3491 45.94% 53.75%

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 15 174 472460 2736.46 700 682 172.4
A 4 249 74587 428.67 700 682 172.4
A 12 17 50816 290.79 700 682 172.4
B 0 213 775779 5296.91 687 664 146.3
B 1 223 452645 3088.71 687 664 146.3
B 0 155 171173 1165.21 687 664 146.3
C 1 241 3620438 21544.43 610 603 168.0
C 12 252 142854 846.65 610 603 168.0
C 13 3 117645 696.61 610 603 168.0
D 8 176 7368434 57454.7 440 419 128.2
D 6 239 1226531 9561.04 440 419 128.2
D 10 172 368670 2871.57 440 419 128.2

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