ASTROSAT CZTI

Data Quality Report

Orbit 11833

Creation date: 2024-06-27T16:18:53.624938
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/AS1A04_022T07_9000001748_11833cztM0_level2.evt modeM0/AS1A04_022T07_9000001748_11833cztM0_level2_quad_clean.evt
Size (bytes)1,389,631,680117,679,680
Size1.3 GB 112.2 MB
Events in quadrant A5,214,528838,612
Events in quadrant B24,676,840330,422
Events in quadrant C4,734,789849,366
Events in quadrant D6,738,988803,284

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0227013
B0804722
C0217522
D0271152

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A106731671.564696%
B10673888083.200600%
C10673740.693338%
D106733112.913895%

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 11823 10675 2 2 0.02% 0.02%
B 11824 10676 8161 8161 69.02% 76.44%
C 11823 10675 0 0 0.00% 0.00%
D 11823 10675 199 199 1.68% 1.86%

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 1 162 168509 663.78 1238 1210 252.0
A 1 178 87901 343.96 1238 1210 252.0
A 1 161 77082 301.03 1238 1210 252.0
B 10 16 20755409 175236.67 623 608 118.4
B 15 204 632168 5332.38 623 608 118.4
B 4 239 593735 5007.88 623 608 118.4
C 13 61 8833 27.0 1209 1215 282.1
C 8 128 8085 24.35 1209 1215 282.1
C 8 112 5515 15.24 1209 1215 282.1
D 12 233 527047 1804.77 1206 1172 291.4
D 1 52 484283 1658.01 1206 1172 291.4
D 12 17 335262 1146.58 1206 1172 291.4

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