ASTROSAT CZTI

Data Quality Report

Orbit 54243

Creation date: 2025-10-08T01:33:51.495817
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_004T08_9000006514_54243cztM0_level2.fits modeM0/AS1C09_004T08_9000006514_54243cztM0_level2_quad_clean.evt
Size (bytes)1,069,744,32059,901,120
Size1020.2 MB 57.1 MB
Events in quadrant A4,476,391571,502
Events in quadrant B13,777,168181,099
Events in quadrant C10,333,465336,843
Events in quadrant D10,515,000275,243

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180391
B0453356
C0352001
D0357421

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64275548.619885%
B6426478574.463119%
C6427291145.293294%
D6427335152.139412%

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 6977 6428 326 326 4.67% 5.07%
B 6976 6427 4569 4569 65.50% 71.09%
C 6977 6428 2644 2644 37.90% 41.13%
D 6976 6427 2722 2722 39.02% 42.35%

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 7 29 1355201 8346.68 650 633 162.3
A 13 248 192934 1184.94 650 633 162.3
A 15 174 145222 890.94 650 633 162.3
B 5 172 12221337 200752.37 280 271 60.9
B 7 0 196372 3221.3 280 271 60.9
B 4 171 88124 1443.14 280 271 60.9
C 1 241 6102440 43023.81 517 512 141.8
C 1 29 1555164 10961.63 517 512 141.8
C 15 215 191802 1348.76 517 512 141.8
D 8 176 8194318 67126.49 427 408 122.1
D 2 62 262222 2144.84 427 408 122.1
D 8 160 125719 1026.58 427 408 122.1

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