ASTROSAT CZTI

Data Quality Report

Orbit 20230617_A12_077T11_9000005696_level2

Creation date: 2023-06-19T15:35:41.744937
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/AS1A12_077T11_9000005696cztM0_level2.fits modeM0/AS1A12_077T11_9000005696cztM0_level2_quad_clean.evt
Size (bytes)1,062,241,9201,157,238,720
Size1013.0 MB 1.1 GB
Events in quadrant A6,483,0227,267,812
Events in quadrant B6,203,0527,284,785
Events in quadrant C6,148,6806,697,370
Events in quadrant D5,184,3485,654,544

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04510
B04510
C04520
D04520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02635490
B02530810
C02856800
D04589470

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024300
B024320
C024320
D024320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1188437680.646231%
B11884310060.846495%
C11883539243.302057%
D1188021285910.823892%

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 166884 118820 0 0 0.00% 0.00%
B 166884 118830 0 0 0.00% 0.00%
C 166884 118292 0 0 0.00% 0.00%
D 166884 118597 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 7 110 5387 9.0 1691 1581 423.0
A 9 19 5241 8.65 1691 1581 423.0
A 0 29 5191 8.53 1691 1581 423.0
B 2 9 5375 11.8 1639 1556 323.6
B 3 80 4409 8.81 1639 1556 323.6
B 3 17 4289 8.44 1639 1556 323.6
C 1 81 4900 8.14 1624 1518 415.7
C 3 202 4829 7.96 1624 1518 415.7
C 1 80 4799 7.89 1624 1518 415.7
D 7 3 3811 6.2 1484 1352 396.7
D 3 14 3734 6.0 1484 1352 396.7
D 4 160 3696 5.91 1484 1352 396.7

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