ASTROSAT CZTI

Data Quality Report

Orbit 18701

Creation date: 2024-06-27T17:53:41.215493
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/AS1A05_165T07_9000002796_18701cztM0_level2.evt modeM0/AS1A05_165T07_9000002796_18701cztM0_level2_quad_clean.evt
Size (bytes)249,736,32031,763,520
Size238.2 MB 30.3 MB
Events in quadrant A1,919,502193,113
Events in quadrant B1,535,294198,733
Events in quadrant C1,559,689191,011
Events in quadrant D2,363,779185,089

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A075151
B062341
C062781
D088861

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580
B0580
C0570
D0560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A26992268.373472%
B2699863.186365%
C26991094.038533%
D26981876.931060%

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 4029 2700 83 83 2.06% 3.07%
B 4029 2700 0 0 0.00% 0.00%
C 4029 2700 6 6 0.15% 0.22%
D 4028 2699 89 89 2.21% 3.30%

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 435991 5586.29 383 376 78.0
A 11 29 5675 67.95 383 376 78.0
A 13 254 4501 52.9 383 376 78.0
B 4 216 8717 112.32 387 378 74.2
B 12 111 8484 109.19 387 378 74.2
B 11 111 7305 93.3 387 378 74.2
C 14 238 59111 681.11 370 373 86.2
C 0 207 52304 602.18 370 373 86.2
C 13 61 2643 26.32 370 373 86.2
D 1 52 882917 9569.16 375 363 92.2
D 7 238 40256 432.54 375 363 92.2
D 5 243 15902 168.48 375 363 92.2

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