ASTROSAT CZTI

Data Quality Report

Orbit 53835

Creation date: 2025-09-10T11:48:48.361635
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_53835cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53835cztM0_level2_quad_clean.evt
Size (bytes)517,170,24095,791,680
Size493.2 MB 91.4 MB
Events in quadrant A3,170,995643,272
Events in quadrant B3,256,868681,333
Events in quadrant C5,864,604560,249
Events in quadrant D6,332,719550,436

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142502
B0145112
C0221112
D0234342

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66791562.335679%
B66791952.919599%
C667981512.202426%
D66795808.683935%

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 7644 6679 7 7 0.09% 0.10%
B 7644 6679 27 27 0.35% 0.40%
C 7644 6679 652 652 8.53% 9.76%
D 7644 6679 507 507 6.63% 7.59%

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 53726 288.4 745 724 183.8
A 10 253 51858 278.23 745 724 183.8
A 8 6 51183 274.56 745 724 183.8
B 5 185 128228 814.82 732 704 156.5
B 8 234 54082 341.06 732 704 156.5
B 10 247 47407 298.41 732 704 156.5
C 15 224 1661706 8793.0 690 683 188.9
C 1 241 591636 3128.34 690 683 188.9
C 12 2 365301 1930.19 690 683 188.9
D 15 93 1990185 10165.41 696 665 195.7
D 10 172 980075 5004.27 696 665 195.7
D 2 172 326413 1664.4 696 665 195.7

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