ASTROSAT CZTI

Data Quality Report

Orbit 20170502_G07_024T01_9000001206_level2

Creation date: 2025-11-11T19:12:57.820265
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/AS1G07_024T01_9000001206cztM0_level2.fits modeM0/AS1G07_024T01_9000001206cztM0_level2_quad_clean.evt
Size (bytes)3,018,386,8804,788,446,400
Size2.8 GB 4.5 GB
Events in quadrant A17,268,50830,795,719
Events in quadrant B16,834,89631,411,359
Events in quadrant C17,227,31030,096,887
Events in quadrant D14,713,68427,384,988

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07657350
B08046430
C07945960
D08356780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05780
B05770
C05760
D05780

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A076040
B076060
C076040
D076120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A37010139731.073491%
B37008359501.607747%
C37005258381.577616%
D37002677982.107419%

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 379980 322318 0 0 0.00% 0.00%
B 379996 322300 0 0 0.00% 0.00%
C 379995 322042 0 0 0.00% 0.00%
D 379996 322233 0 0 0.00% 0.00%

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 29 16655 11.07 4497 4209 1124.6
A 7 110 14373 9.04 4497 4209 1124.6
A 0 30 13328 8.11 4497 4209 1124.6
B 2 9 14838 12.29 4456 4258 860.7
B 14 254 11485 8.4 4456 4258 860.7
B 12 226 11421 8.32 4456 4258 860.7
C 1 81 12958 7.41 4549 4239 1176.5
C 1 80 12923 7.38 4549 4239 1176.5
C 12 241 12253 6.81 4549 4239 1176.5
D 3 14 11301 6.77 4195 3814 1106.2
D 6 231 11062 6.55 4195 3814 1106.2
D 7 5 10468 6.02 4195 3814 1106.2

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