ASTROSAT CZTI

Data Quality Report

Orbit 20210715_A10_053T42_9000004544_level2

Creation date: 2025-12-27T10:19:00.016745
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/AS1A10_053T42_9000004544cztM0_level2.fits modeM0/AS1A10_053T42_9000004544cztM0_level2_quad_clean.evt
Size (bytes)140,365,440142,597,440
Size133.9 MB 136.0 MB
Events in quadrant A868,532871,273
Events in quadrant B805,078852,267
Events in quadrant C822,536810,742
Events in quadrant D735,078764,117

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0303300
B0455330
C0326890
D0379340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03000
B03000
C03000
D03000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A147791320.893159%
B147793902.638879%
C147795433.674132%
D147795123.464375%

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 16194 14779 0 0 0.00% 0.00%
B 16194 14778 0 0 0.00% 0.00%
C 16194 14774 0 0 0.00% 0.00%
D 16194 14762 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 29 882 11.52 226 212 58.2
A 7 110 704 8.46 226 212 58.2
A 0 30 684 8.11 226 212 58.2
B 2 9 658 10.22 212 202 44.6
B 5 232 582 8.51 212 202 44.6
B 5 255 527 7.28 212 202 44.6
C 12 241 609 7.18 217 203 56.6
C 9 233 581 6.68 217 203 56.6
C 3 126 574 6.56 217 203 56.6
D 6 231 554 6.27 209 190 58.0
D 4 160 531 5.88 209 190 58.0
D 7 3 524 5.76 209 190 58.0

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