ASTROSAT CZTI

Data Quality Report

Orbit 52062

Creation date: 2025-05-14T02:30:16.673026
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/AS1C09_011T06_9000006468_52062cztM0_level2.fits modeM0/AS1C09_011T06_9000006468_52062cztM0_level2_quad_clean.evt
Size (bytes)1,066,060,80061,208,640
Size1016.7 MB 58.4 MB
Events in quadrant A3,844,192617,345
Events in quadrant B11,011,389275,111
Events in quadrant C7,856,386507,092
Events in quadrant D16,257,7869,108

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157232
B0370712
C0277332
D0526856

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63732543.985564%
B6373392761.619332%
C6373151323.740781%
D6372629998.854363%

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 7533 6374 143 143 1.90% 2.24%
B 7532 6372 3595 3595 47.73% 56.42%
C 7532 6373 1234 1234 16.38% 19.36%
D 7531 6371 5893 5893 78.25% 92.50%

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 11 3 329579 1952.16 673 657 168.5
A 4 3 161452 954.32 673 657 168.5
A 4 249 102509 604.5 673 657 168.5
B 8 3 8675345 113564.42 354 341 76.4
B 10 254 503115 6581.81 354 341 76.4
B 0 171 108413 1414.77 354 341 76.4
C 15 224 4118036 24302.06 612 607 169.4
C 12 252 616306 3634.0 612 607 169.4
C 13 3 394133 2322.69 612 607 169.4
D 15 94 6768883 117614.69 193 184 57.5
D 12 3 4557072 79181.68 193 184 57.5
D 6 42 2962103 51467.08 193 184 57.5

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