ASTROSAT CZTI

Data Quality Report

Orbit 53755

Creation date: 2025-09-05T03:35:52.710185
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_022T04_9000006506_53755cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53755cztM0_level2_quad_clean.evt
Size (bytes)2,427,649,920194,376,960
Size2.3 GB 185.4 MB
Events in quadrant A40,158,754463,543
Events in quadrant B10,418,7081,717,820
Events in quadrant C25,469,8351,045,684
Events in quadrant D12,428,1421,414,731

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01318003
B0433266
C0881343
D0501493

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03680
B03680
C03680
D03680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A180221342974.514482%
B180214382.430498%
C18022604633.547886%
D1802212046.680724%

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 19551 18021 13185 13185 67.44% 73.16%
B 19551 18024 287 287 1.47% 1.59%
C 19552 18023 5787 5787 29.60% 32.11%
D 19551 18023 1148 1148 5.87% 6.37%

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 63 33176886 118493.0 1132 1107 280.0
A 3 78 876693 3127.31 1132 1107 280.0
A 0 8 589213 2100.52 1132 1107 280.0
B 4 81 1165657 2978.65 1837 1771 390.7
B 7 0 911418 2328.0 1837 1771 390.7
B 0 213 278512 708.24 1837 1771 390.7
C 1 241 11046592 26871.08 1479 1464 411.0
C 15 224 5882180 14306.87 1479 1464 411.0
C 3 242 811660 1971.08 1479 1464 411.0
D 2 172 1676819 3250.8 1779 1696 515.3
D 7 70 1353674 2623.7 1779 1696 515.3
D 8 176 578741 1119.83 1779 1696 515.3

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