ASTROSAT CZTI

Data Quality Report

Orbit 37508

Creation date: 2024-06-27T21:40:55.714440
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_030T02_9000005328_37508cztM0_level2.evt modeM0/AS1A11_030T02_9000005328_37508cztM0_level2_quad_clean.evt
Size (bytes)502,251,84070,577,280
Size479.0 MB 67.3 MB
Events in quadrant A2,622,504459,070
Events in quadrant B3,626,752457,065
Events in quadrant C3,024,253457,907
Events in quadrant D5,597,851411,377

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109163
B0140212
C0119522
D0201282

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A500790.179748%
B50072985.951668%
C5007951.897344%
D500751710.325544%

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 7099 5008 5 5 0.07% 0.10%
B 7099 5008 250 250 3.52% 4.99%
C 7099 5008 102 102 1.44% 2.04%
D 7099 5008 579 579 8.16% 11.56%

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 273074 2328.34 579 568 117.0
A 15 222 50132 423.48 579 568 117.0
A 13 248 41924 353.35 579 568 117.0
B 5 172 847222 7765.19 567 553 109.0
B 5 255 247671 2266.43 567 553 109.0
B 0 213 141984 1297.13 567 553 109.0
C 14 254 510442 3794.9 571 574 134.4
C 15 214 214581 1592.83 571 574 134.4
C 0 10 67385 497.27 571 574 134.4
D 2 250 1511477 11093.17 550 535 136.2
D 1 52 946563 6945.63 550 535 136.2
D 13 249 413376 3031.03 550 535 136.2

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