ASTROSAT CZTI

Data Quality Report

Orbit 35155

Creation date: 2022-03-30T13:44:57.952446
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/AS1T05_016T01_9000005036_35155cztM0_level2.evt modeM0/AS1T05_016T01_9000005036_35155cztM0_level2_quad_clean.evt
Size (bytes)882,357,120136,555,200
Size841.5 MB 130.2 MB
Events in quadrant A3,990,742949,364
Events in quadrant B9,943,562829,807
Events in quadrant C4,571,902930,075
Events in quadrant D7,664,731857,711

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169662
B0352272
C0183042
D0284752

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8186420.513071%
B8186213326.056682%
C8186981.197166%
D81865046.156853%

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 10961 8188 18 18 0.16% 0.22%
B 10961 8188 1304 1304 11.90% 15.93%
C 10961 8188 79 79 0.72% 0.96%
D 10961 8188 423 423 3.86% 5.17%

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 112469 580.26 959 937 192.2
A 9 143 86832 446.88 959 937 192.2
A 15 169 63875 327.45 959 937 192.2
B 5 236 6032485 37276.59 852 829 161.8
B 5 200 311962 1922.85 852 829 161.8
B 5 172 168733 1037.67 852 829 161.8
C 15 214 342527 1606.18 922 926 212.7
C 1 23 286850 1344.39 922 926 212.7
C 0 10 179658 840.39 922 926 212.7
D 8 195 2129113 9611.8 909 884 221.4
D 13 249 583920 2633.19 909 884 221.4
D 12 233 303226 1365.48 909 884 221.4

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