ASTROSAT CZTI

Data Quality Report

Orbit 20240506_A13_091T07_9000006226_level2

Creation date: 2024-05-08T09:46:45.913866
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/AS1A13_091T07_9000006226cztM0_level2.fits modeM0/AS1A13_091T07_9000006226cztM0_level2_quad_clean.evt
Size (bytes)275,921,280266,261,760
Size263.1 MB 253.9 MB
Events in quadrant A1,604,8241,526,518
Events in quadrant B1,556,9781,540,814
Events in quadrant C1,635,9481,505,663
Events in quadrant D1,385,9101,319,506

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1140612256225320140608639336494
B1140612256225320140608639336494
C1140612256225320140608639336494
D1140612256225320140608639336494

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06430
B06340
C06340
D06400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120420
B0855930
C0678150
D0879520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3150115194.822069%
B3162117555.550109%
C316004111.300633%
D3162217765.616343%

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 34307 31690 0 0 0.00% 0.00%
B 34307 31794 0 0 0.00% 0.00%
C 34307 31760 0 0 0.00% 0.00%
D 34307 31764 0 0 0.00% 0.00%

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 29 1319 8.41 418 388 110.7
A 7 110 1242 7.71 418 388 110.7
A 14 95 1221 7.52 418 388 110.7
B 2 9 1490 13.16 411 390 83.6
B 2 8 1204 9.74 411 390 83.6
B 5 232 1092 8.4 411 390 83.6
C 1 81 1246 7.47 433 400 113.2
C 1 80 1243 7.45 433 400 113.2
C 3 158 1152 6.64 433 400 113.2
D 4 16 1059 6.29 397 360 111.1
D 6 38 1011 5.85 397 360 111.1
D 7 3 1006 5.81 397 360 111.1

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