ASTROSAT CZTI

Data Quality Report

Orbit 20210519_A10_053T22_9000004384_level2

Creation date: 2021-05-20T10:17:24.146345
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/AS1A10_053T22_9000004384cztM0_level2_bc.evt modeM0/AS1A10_053T22_9000004384cztM0_level2_quad_clean.evt
Size (bytes)1,207,307,520297,109,440
Size1.1 GB 283.3 MB
Events in quadrant A6,008,8851,941,928
Events in quadrant B11,836,8021,937,115
Events in quadrant C6,446,2551,808,079
Events in quadrant D10,684,2441,709,280

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0570
B0570
C0570
D0570

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04720
B04720
C04720
D04720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0512490
B0714550
C0544710
D0750820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A232763081.323251%
B232763971.705620%
C232766172.650799%
D23276245310.538752%

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 28250 23277 38 38 0.13% 0.16%
B 28251 23277 1 1 0.00% 0.00%
C 28250 23275 6 6 0.02% 0.03%
D 28250 23276 56 56 0.20% 0.24%

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 4 2 307531 1008.3 1445 1431 303.6
A 12 96 54320 174.22 1445 1431 303.6
A 8 192 52873 169.45 1445 1431 303.6
B 6 159 6025280 22572.01 1436 1412 266.9
B 0 229 222870 829.82 1436 1412 266.9
B 0 230 47954 174.4 1436 1412 266.9
C 10 22 606441 1957.21 1334 1336 309.2
C 3 233 395206 1273.97 1334 1336 309.2
C 0 10 231318 743.88 1334 1336 309.2
D 13 104 2331246 8015.5 1316 1280 290.7
D 12 218 1047050 3597.64 1316 1280 290.7
D 8 195 1030381 3540.29 1316 1280 290.7

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