ASTROSAT CZTI

Data Quality Report

Orbit 35985

Creation date: 2022-07-19T00:17:56.771029
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/AS1A11_050T19_9000005156_35985cztM0_level2.evt modeM0/AS1A11_050T19_9000005156_35985cztM0_level2_quad_clean.evt
Size (bytes)874,031,04086,947,200
Size833.5 MB 82.9 MB
Events in quadrant A2,628,230739,654
Events in quadrant B13,332,430226,670
Events in quadrant C5,494,399634,820
Events in quadrant D4,673,526673,347

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107763
B0430532
C0195882
D0173532

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A507160.118320%
B50715071100.000000%
C5071110221.731414%
D50714518.893709%

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 7133 5072 1 1 0.01% 0.02%
B 7132 5070 4975 4975 69.76% 98.13%
C 7133 5071 939 939 13.16% 18.52%
D 7133 5072 312 312 4.37% 6.15%

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 10 83 165441 1313.68 633 624 125.5
A 8 144 9111 67.65 633 624 125.5
A 13 254 8663 64.08 633 624 125.5
B 5 31 4820047 115198.11 218 213 41.8
B 5 15 4493158 107385.19 218 213 41.8
B 5 14 2714914 64883.65 218 213 41.8
C 9 187 1614246 12999.98 545 549 124.1
C 0 207 1488270 11985.11 545 549 124.1
C 15 214 189525 1522.39 545 549 124.1
D 1 52 1365663 9456.98 602 588 144.3
D 13 249 546934 3784.98 602 588 144.3
D 8 195 167623 1157.19 602 588 144.3

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