ASTROSAT CZTI

Data Quality Report

Orbit 11972

Creation date: 2024-06-27T16:20:41.205778
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/AS1A04_164T01_9000001770_11972cztM0_level2.evt modeM0/AS1A04_164T01_9000001770_11972cztM0_level2_quad_clean.evt
Size (bytes)421,277,76065,013,120
Size401.8 MB 62.0 MB
Events in quadrant A2,670,880406,499
Events in quadrant B3,542,638403,870
Events in quadrant C2,363,326408,249
Events in quadrant D3,825,629382,840

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115501
B0140791
C0106381
D0148031

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5235510.974212%
B52352695.138491%
C5235100.191022%
D52351673.190067%

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 5236 5236 3 3 0.06% 0.06%
B 5236 5236 144 144 2.75% 2.75%
C 5236 5236 0 0 0.00% 0.00%
D 5236 5236 161 161 3.07% 3.07%

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 11 29 131187 1031.84 615 603 126.6
A 1 162 62371 488.08 615 603 126.6
A 1 178 27320 211.11 615 603 126.6
B 4 239 988639 8386.0 616 601 117.8
B 15 204 62798 527.9 616 601 117.8
B 11 51 61552 517.32 616 601 117.8
C 13 61 4503 27.7 605 607 140.7
C 14 234 1972 9.7 605 607 140.7
C 3 202 1488 6.26 605 607 140.7
D 4 95 724207 5116.93 588 571 141.4
D 1 52 359381 2537.2 588 571 141.4
D 7 80 192826 1359.46 588 571 141.4

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