ASTROSAT CZTI

Data Quality Report

Orbit 53852

Creation date: 2025-09-11T17:51:01.292208
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_53852cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53852cztM0_level2_quad_clean.evt
Size (bytes)1,863,452,160236,004,480
Size1.7 GB 225.1 MB
Events in quadrant A9,817,8601,722,141
Events in quadrant B11,493,8821,790,580
Events in quadrant C22,322,8051,257,356
Events in quadrant D23,918,0631,101,341

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04171010
B04683135
C07920278
D08373833

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03760
B03760
C03760
D03760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A184754532.451962%
B184709775.289659%
C18463473325.635054%
D18471563130.485626%

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 19643 18477 61 61 0.31% 0.33%
B 19644 18479 429 429 2.18% 2.32%
C 19644 18477 4368 4368 22.24% 23.64%
D 19644 18479 5569 5569 28.35% 30.14%

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 8 249 975858 1939.84 2050 1993 502.0
A 0 8 202794 399.97 2050 1993 502.0
A 4 249 162674 320.06 2050 1993 502.0
B 0 213 1662281 3880.35 2002 1928 427.9
B 5 185 588703 1371.33 2002 1928 427.9
B 8 234 456648 1062.71 2002 1928 427.9
C 15 224 8725668 18159.46 1759 1741 480.4
C 1 241 6002856 12491.74 1759 1741 480.4
C 12 2 196567 405.54 1759 1741 480.4
D 15 93 11788199 24787.77 1677 1599 475.5
D 10 172 2686061 5645.55 1677 1599 475.5
D 13 153 1318006 2768.46 1677 1599 475.5

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