ASTROSAT CZTI

Data Quality Report

Orbit 27801

Creation date: 2024-06-27T19:44:32.388301
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_016T01_9000004016_27801cztM0_level2.evt modeM0/AS1A10_016T01_9000004016_27801cztM0_level2_quad_clean.evt
Size (bytes)441,754,56077,906,880
Size421.3 MB 74.3 MB
Events in quadrant A2,830,887493,402
Events in quadrant B3,212,377501,668
Events in quadrant C2,867,544482,737
Events in quadrant D4,060,238462,347

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121280
B0131890
C0121460
D0161070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5977270.451732%
B5975550.920502%
C5972580.971199%
D59461793.010427%

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 7439 6054 0 0 0.00% 0.00%
B 7440 6038 10 10 0.13% 0.17%
C 7439 6048 0 0 0.00% 0.00%
D 7439 6019 128 128 1.72% 2.13%

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 10103 63.51 733 717 147.8
A 3 137 6871 41.64 733 717 147.8
A 0 226 6330 37.98 733 717 147.8
B 3 64 181507 1308.16 723 705 138.2
B 10 245 83386 598.23 723 705 138.2
B 10 246 49976 356.49 723 705 138.2
C 14 238 113291 685.05 700 703 164.4
C 3 233 14110 81.58 700 703 164.4
C 4 175 11120 63.38 700 703 164.4
D 1 52 1227038 7267.66 699 679 168.7
D 2 250 125002 736.76 699 679 168.7
D 7 69 45741 267.05 699 679 168.7

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