ASTROSAT CZTI

Data Quality Report

Orbit 20210427_A10_102T01_9000004340_level2

Creation date: 2021-04-30T10:51:41.579160
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

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_102T01_9000004340cztM0_level2_bc.evt modeM0/AS1A10_102T01_9000004340cztM0_level2_quad_clean.evt
Size (bytes)5,031,668,160737,861,760
Size4.7 GB 703.7 MB
Events in quadrant A14,221,7414,919,269
Events in quadrant B30,651,2924,954,476
Events in quadrant C78,383,6633,722,225
Events in quadrant D24,829,2314,398,219

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012960
B012960
C012960
D012960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01344320
B01919590
C03485250
D01769620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6334410071.589732%
B6334415952.517997%
C633442963146.777911%
D6334448097.591879%

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 74089 63341 24 24 0.03% 0.04%
B 74089 63341 0 0 0.00% 0.00%
C 74089 63337 7303 7303 9.86% 11.53%
D 74089 63340 666 666 0.90% 1.05%

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 13 623194 829.65 3485 3424 747.0
A 8 192 115216 149.65 3485 3424 747.0
A 13 254 98888 127.79 3485 3424 747.0
B 6 159 17074394 25722.29 3516 3427 663.7
B 0 190 76185 109.63 3516 3427 663.7
B 0 229 36158 49.32 3516 3427 663.7
C 3 233 67627700 105676.88 2707 2692 639.9
C 15 208 133014 203.65 2707 2692 639.9
C 2 114 100420 152.72 2707 2692 639.9
D 1 52 7068813 9310.42 3254 3161 758.9
D 13 104 2498212 3287.73 3254 3161 758.9
D 8 195 1813944 2386.07 3254 3161 758.9

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