ASTROSAT CZTI

Data Quality Report

Orbit 11140

Creation date: 2024-06-27T16:08:49.183220
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/AS1G08_071T02_9000001620_11140cztM0_level2.evt modeM0/AS1G08_071T02_9000001620_11140cztM0_level2_quad_clean.evt
Size (bytes)1,065,594,240133,931,520
Size1016.2 MB 127.7 MB
Events in quadrant A11,334,588793,180
Events in quadrant B7,542,636820,090
Events in quadrant C5,155,376844,998
Events in quadrant D7,464,087803,294

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024313
B024210
C02428
D02409

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132
B0187
C0132
D0144

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0427631530
B030837900
C024427821
D030885955

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11458186516.276837%
B114885985.205432%
C11495700.608960%
D114906835.944299%

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 17210 11500 1467 1467 8.52% 12.76%
B 17210 11522 328 328 1.91% 2.85%
C 17210 11525 15 15 0.09% 0.13%
D 17210 11515 553 553 3.21% 4.80%

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 8 5 3316462 13036.62 1249 1221 254.3
A 14 238 2183620 8581.91 1249 1221 254.3
A 14 63 650609 2553.61 1249 1221 254.3
B 4 239 1614633 6405.11 1312 1279 251.9
B 10 244 247598 977.9 1312 1279 251.9
B 10 16 147734 581.43 1312 1279 251.9
C 5 128 84749 275.63 1293 1300 302.8
C 9 54 17173 52.43 1293 1300 302.8
C 13 61 9697 27.73 1293 1300 302.8
D 10 253 1792851 5838.86 1256 1219 306.8
D 1 52 226964 735.69 1256 1219 306.8
D 2 14 178087 576.41 1256 1219 306.8

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