ASTROSAT CZTI

Data Quality Report

Orbit 20220207_A05_103T01_9000004912_level2

Creation date: 2025-12-31T21:43:19.989037
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_103T01_9000004912cztM0_level2.fits modeM0/AS1A05_103T01_9000004912cztM0_level2_quad_clean.evt
Size (bytes)118,903,68064,880,640
Size113.4 MB 61.9 MB
Events in quadrant A765,668315,956
Events in quadrant B721,658314,347
Events in quadrant C758,560308,626
Events in quadrant D600,878270,380

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0233170
B0275810
C0251540
D0434600

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02220
B02220
C02220
D02220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10889170.156121%
B108894684.297915%
C108891121.028561%
D10888156714.391991%

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 15043 10889 0 0 0.00% 0.00%
B 15042 10886 0 0 0.00% 0.00%
C 15042 10888 0 0 0.00% 0.00%
D 15042 10864 0 0 0.00% 0.00%

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 9 19 607 8.54 199 190 48.8
A 14 95 599 8.38 199 190 48.8
A 7 110 594 8.27 199 190 48.8
B 2 9 587 10.4 191 183 38.8
B 3 17 508 8.36 191 183 38.8
B 3 80 495 8.03 191 183 38.8
C 1 81 597 7.83 201 192 51.7
C 1 80 593 7.75 201 192 51.7
C 3 203 563 7.17 201 192 51.7
D 10 189 469 6.77 172 159 45.8
D 7 3 452 6.4 172 159 45.8
D 6 83 444 6.23 172 159 45.8

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