ASTROSAT CZTI

Data Quality Report

Orbit 08500

Creation date: 2024-06-27T15:33:33.856835
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/AS1G07_060T01_9000001200_08500cztM0_level2.evt modeM0/AS1G07_060T01_9000001200_08500cztM0_level2_quad_clean.evt
Size (bytes)572,860,80097,102,080
Size546.3 MB 92.6 MB
Events in quadrant A4,064,194590,295
Events in quadrant B4,361,233592,454
Events in quadrant C3,984,661585,250
Events in quadrant D4,348,066568,527

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800
B01800
C01800
D01800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01816217
B01874114
C01808416
D01879814

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A87143113.568969%
B87153483.993115%
C87142032.329585%
D87162352.696191%

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 9496 8724 2 2 0.02% 0.02%
B 9496 8723 15 15 0.16% 0.17%
C 9496 8723 0 0 0.00% 0.00%
D 9496 8725 13 13 0.14% 0.15%

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 5 16 19100 83.88 1049 1022 215.5
A 0 226 9524 39.45 1049 1022 215.5
A 12 194 9301 38.41 1049 1022 215.5
B 5 255 97363 469.75 1052 1023 205.1
B 0 214 74352 357.55 1052 1023 205.1
B 4 81 50309 240.32 1052 1023 205.1
C 13 61 7736 28.27 1019 1022 237.5
C 14 82 4319 13.88 1019 1022 237.5
C 8 222 4138 13.12 1019 1022 237.5
D 1 52 299782 1180.52 1010 980 253.1
D 7 71 116198 455.21 1010 980 253.1
D 14 34 49967 193.54 1010 980 253.1

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