ASTROSAT CZTI

Data Quality Report

Orbit 50124

Creation date: 2025-01-04T21:11:23.759445
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/AS1C09_003T01_9000006442_50124cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50124cztM0_level2_quad_clean.evt
Size (bytes)3,974,892,480122,670,720
Size3.7 GB 117.0 MB
Events in quadrant A47,934,249109,133
Events in quadrant B11,261,8421,803,962
Events in quadrant C43,547,913143,910
Events in quadrant D42,921,623331,418

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01555527
B0474562
C01424362
D01406052

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03900
B03900
C03900
D03900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A192221816794.511497%
B192228894.624909%
C192221783692.789512%
D192221566881.510769%

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 20187 19225 16891 16891 83.67% 87.86%
B 20187 19226 452 452 2.24% 2.35%
C 20187 19224 14181 14181 70.25% 73.77%
D 20187 19225 13812 13812 68.42% 71.84%

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 6 250 18164445 78816.99 897 876 230.5
A 0 98 17428499 75623.5 897 876 230.5
A 8 8 2994972 12992.25 897 876 230.5
B 2 176 1456829 3524.11 1944 1876 412.9
B 5 185 794547 1919.97 1944 1876 412.9
B 0 213 194808 467.31 1944 1876 412.9
C 15 197 8408894 41805.23 638 630 201.1
C 4 111 6941903 34511.46 638 630 201.1
C 15 214 6009646 29876.36 638 630 201.1
D 7 61 12353978 34135.73 1102 1056 361.9
D 15 106 4972999 13739.33 1102 1056 361.9
D 15 168 4202529 11610.24 1102 1056 361.9

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