ASTROSAT CZTI

Data Quality Report

Orbit 16287

Creation date: 2024-06-27T17:20:34.948551
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/AS1A05_212T08_9000002396_16287cztM0_level2.evt modeM0/AS1A05_212T08_9000002396_16287cztM0_level2_quad_clean.evt
Size (bytes)320,883,84070,750,080
Size306.0 MB 67.5 MB
Events in quadrant A2,329,103458,576
Events in quadrant B2,325,518463,189
Events in quadrant C2,208,884445,312
Events in quadrant D2,528,167439,370

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100600
B098010
C096060
D0106430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4783120.250889%
B4783110.229981%
C4783140.292703%
D4783130.271796%

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 4784 4784 6 6 0.13% 0.13%
B 4784 4784 3 3 0.06% 0.06%
C 4784 4784 0 0 0.00% 0.00%
D 4784 4784 11 11 0.23% 0.23%

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 15 174 138405 1213.34 563 551 113.6
A 9 143 15986 135.85 563 551 113.6
A 13 248 7289 59.31 563 551 113.6
B 0 198 60336 551.57 562 549 108.4
B 0 189 29284 265.1 562 549 108.4
B 12 111 12270 108.13 562 549 108.4
C 14 238 84441 657.56 541 546 127.6
C 3 233 7708 56.14 541 546 127.6
C 0 207 5597 39.59 541 546 127.6
D 1 52 154132 1131.18 550 534 135.8
D 7 38 132707 973.39 550 534 135.8
D 10 70 72895 532.91 550 534 135.8

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