ASTROSAT CZTI

Data Quality Report

Orbit 19081

Creation date: 2024-06-27T17:58:51.436207
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_046T01_9000002834_19081cztM0_level2.evt modeM0/AS1A05_046T01_9000002834_19081cztM0_level2_quad_clean.evt
Size (bytes)283,939,20047,658,240
Size270.8 MB 45.5 MB
Events in quadrant A1,951,900291,140
Events in quadrant B2,082,872296,905
Events in quadrant C2,216,041283,545
Events in quadrant D2,061,463275,788

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012438
B012341
C012440
D012341

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126674072
B0134544625
C0136264375
D0133514474

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A033
B033
C033
D033

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4228170.402081%
B4178290.694112%
C4175400.958084%
D4172140.335570%

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 5682 4550 2 2 0.04% 0.04%
B 5807 4498 13 13 0.22% 0.29%
C 5668 4490 5 5 0.09% 0.11%
D 5705 4503 7 7 0.12% 0.16%

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 20194 190.14 500 488 103.6
A 13 254 5036 43.88 500 488 103.6
A 9 143 4611 39.78 500 488 103.6
B 3 112 53212 550.1 491 480 95.9
B 7 220 49794 514.44 491 480 95.9
B 6 36 18892 192.07 491 480 95.9
C 3 233 239214 2106.61 477 480 113.3
C 14 238 73448 643.88 477 480 113.3
C 0 207 44659 389.84 477 480 113.3
D 7 238 101040 853.95 481 467 117.8
D 1 52 71301 601.44 481 467 117.8
D 11 176 53236 448.05 481 467 117.8

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