ASTROSAT CZTI

Data Quality Report

Orbit 38891

Creation date: 2024-06-27T21:57:48.234227
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/AS1T05_058T01_9000005414_38891cztM0_level2.fits modeM0/AS1T05_058T01_9000005414_38891cztM0_level2_quad_clean.evt
Size (bytes)490,167,36088,657,920
Size467.5 MB 84.6 MB
Events in quadrant A2,967,713643,115
Events in quadrant B2,699,032650,901
Events in quadrant C2,713,081622,865
Events in quadrant D9,325,193372,124

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122983
B0118452
C0114562
D0315942

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5649240.424854%
B5649380.672685%
C564970.123916%
D5649224439.723845%

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 7231 5650 4 4 0.06% 0.07%
B 7231 5650 21 21 0.29% 0.37%
C 7231 5650 0 0 0.00% 0.00%
D 7231 5650 2231 2231 30.85% 39.49%

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 10 83 436998 3355.78 640 628 130.0
A 13 248 21458 160.19 640 628 130.0
A 9 143 12010 87.53 640 628 130.0
B 5 172 144858 1171.14 631 613 123.2
B 5 184 24751 195.98 631 613 123.2
B 12 111 15234 118.71 631 613 123.2
C 15 214 235957 1606.16 623 625 146.5
C 4 254 28984 193.55 623 625 146.5
C 15 159 8899 56.47 623 625 146.5
D 12 227 6315466 50041.8 511 497 126.2
D 2 249 240492 1901.8 511 497 126.2
D 12 235 174582 1379.5 511 497 126.2

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