ASTROSAT CZTI

Data Quality Report

Orbit 46712

Creation date: 2024-06-27T23:26:44.679267
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_037T01_9000006256_46712cztM0_level2.fits modeM0/AS1A13_037T01_9000006256_46712cztM0_level2_quad_clean.evt
Size (bytes)1,894,210,560395,000,640
Size1.8 GB 376.7 MB
Events in quadrant A23,250,3952,666,337
Events in quadrant B11,980,1642,748,143
Events in quadrant C15,692,7342,495,222
Events in quadrant D17,250,1902,317,133

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0863332
B0537122
C0653272
D0694812

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05060
B05060
C05060
D05060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A251884541.802446%
B251892170.861487%
C2518915095.990710%
D2518914285.669141%

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 25873 25191 20 20 0.08% 0.08%
B 25874 25192 19 19 0.07% 0.08%
C 25874 25192 1354 1354 5.23% 5.37%
D 25874 25192 1201 1201 4.64% 4.77%

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 11899245 20803.24 2761 2695 571.9
A 9 191 573909 998.87 2761 2695 571.9
A 13 254 45399 74.68 2761 2695 571.9
B 4 171 507940 924.55 2766 2678 546.5
B 0 198 232066 419.74 2766 2678 546.5
B 12 111 70440 123.99 2766 2678 546.5
C 12 2 4705620 7605.49 2627 2636 618.4
C 14 254 313717 503.07 2627 2636 618.4
C 3 233 254942 408.02 2627 2636 618.4
D 13 168 2712061 4051.72 2646 2562 668.7
D 1 52 2077527 3102.86 2646 2562 668.7
D 13 249 1136511 1695.68 2646 2562 668.7

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