ASTROSAT CZTI

Data Quality Report

Orbit 50740

Creation date: 2025-02-14T01:02:24.609408
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/AS1C07_001T01_9000006450_50740cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50740cztM0_level2_quad_clean.evt
Size (bytes)612,869,76087,621,120
Size584.5 MB 83.6 MB
Events in quadrant A5,386,806590,837
Events in quadrant B3,359,959659,501
Events in quadrant C7,059,572533,757
Events in quadrant D6,408,302443,757

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01264
B01264
C01264
D01264

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020666433
B014496242
C025795469
D023867604

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60902644.334975%
B61161482.419882%
C608669311.386789%
D6094126320.725304%

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 7286 6117 171 171 2.35% 2.80%
B 7308 6138 41 41 0.56% 0.67%
C 7328 6116 566 566 7.72% 9.25%
D 7309 6120 1122 1122 15.35% 18.33%

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 4 4 2168699 13173.78 658 641 164.6
A 8 38 151382 915.95 658 641 164.6
A 6 195 150882 912.91 658 641 164.6
B 0 172 153669 1082.17 668 644 141.4
B 7 0 115809 814.43 668 644 141.4
B 8 128 83154 583.5 668 644 141.4
C 3 233 1537884 8844.57 630 621 173.8
C 12 247 1090019 6267.8 630 621 173.8
C 5 10 427198 2454.29 630 621 173.8
D 2 226 1121786 7108.77 572 550 157.7
D 15 174 1105128 7003.15 572 550 157.7
D 2 216 697116 4416.31 572 550 157.7

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