ASTROSAT CZTI

Data Quality Report

Orbit 56337

Creation date: 2026-02-26T12:57:58.354715
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_049T01_9000006552_56337cztM0_level2.fits modeM0/AS1A14_049T01_9000006552_56337cztM0_level2_quad_clean.evt
Size (bytes)846,930,24091,005,120
Size807.7 MB 86.8 MB
Events in quadrant A5,183,112707,797
Events in quadrant B4,835,268765,487
Events in quadrant C5,108,164681,199
Events in quadrant D15,629,65465,843

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0207210
B0197370
C0205310
D0517740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76292913.814392%
B76303064.010485%
C76303084.036697%
D76307630100.000000%

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 7629 7629 260 260 3.41% 3.41%
B 7630 7630 186 186 2.44% 2.44%
C 7630 7630 266 266 3.49% 3.49%
D 7629 7629 4790 4790 62.79% 62.79%

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 0 143 548566 2729.95 810 789 200.7
A 0 8 399425 1986.68 810 789 200.7
A 3 14 363281 1806.54 810 789 200.7
B 5 185 1002361 5810.92 802 772 172.4
B 0 231 261294 1511.47 802 772 172.4
B 0 183 122480 706.11 802 772 172.4
C 12 254 881867 4123.4 779 774 213.7
C 5 250 309066 1442.77 779 774 213.7
C 15 198 302846 1413.66 779 774 213.7
D 8 129 14775302 521731.89 92 87 28.3
D 6 239 138322 4881.26 92 87 28.3
D 2 62 109535 3864.75 92 87 28.3

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