ASTROSAT CZTI

Data Quality Report

Orbit 23820

Creation date: 2024-06-27T18:59:04.696289
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/AS1A07_113T01_9000003526_23820cztM0_level2.evt modeM0/AS1A07_113T01_9000003526_23820cztM0_level2_quad_clean.evt
Size (bytes)3,543,157,440402,736,320
Size3.3 GB 384.1 MB
Events in quadrant A15,828,5092,593,482
Events in quadrant B18,380,4322,654,285
Events in quadrant C16,186,4672,581,736
Events in quadrant D54,659,9192,066,859

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06760
B06760
C06760
D06760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0688275
B0758315
C0693206
D018565110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A334593681.099854%
B3346011523.442917%
C334595841.745420%
D334581375341.105266%

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 38352 33461 0 0 0.00% 0.00%
B 38352 33461 521 521 1.36% 1.56%
C 38351 33460 14 14 0.04% 0.04%
D 38350 33457 11990 11990 31.26% 35.84%

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 13 254 53982 60.49 4100 4012 826.1
A 3 137 36965 39.89 4100 4012 826.1
A 0 226 35205 37.76 4100 4012 826.1
B 3 64 1592323 2054.16 4056 3950 773.2
B 15 33 744251 957.39 4056 3950 773.2
B 12 111 95288 118.12 4056 3950 773.2
C 14 238 628420 675.17 3949 3979 924.9
C 0 10 67541 68.73 3949 3979 924.9
C 7 247 56916 57.24 3949 3979 924.9
D 13 174 24651931 30069.4 3367 3273 819.7
D 8 195 14021654 17101.31 3367 3273 819.7
D 1 52 3017024 3676.54 3367 3273 819.7

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