ASTROSAT CZTI

Data Quality Report

Orbit 57360

Creation date: 2026-05-05T16:53:15.878582
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/AS1A14_102T01_9000006572_57360cztM0_level2.fits modeM0/AS1A14_102T01_9000006572_57360cztM0_level2_quad_clean.evt
Size (bytes)462,432,96087,062,400
Size441.0 MB 83.0 MB
Events in quadrant A2,888,149585,590
Events in quadrant B3,036,758622,384
Events in quadrant C7,151,428476,425
Events in quadrant D3,562,839522,410

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130261
B0134961
C0255061
D0148101

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6153651.056395%
B61531262.047782%
C6153125920.461563%
D61541652.681183%

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 7063 6153 5 5 0.07% 0.08%
B 7063 6153 46 46 0.65% 0.75%
C 7063 6153 1079 1079 15.28% 17.54%
D 7064 6155 122 122 1.73% 1.98%

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 3 14 114595 692.57 667 651 164.5
A 4 95 96178 580.63 667 651 164.5
A 0 12 33549 199.96 667 651 164.5
B 5 185 278640 1985.6 649 624 140.0
B 10 247 53671 378.86 649 624 140.0
B 7 252 40089 281.86 649 624 140.0
C 15 224 4468085 27644.25 589 581 161.6
C 12 252 189280 1167.64 589 581 161.6
C 14 254 69690 427.64 589 581 161.6
D 2 249 528517 2897.69 644 615 182.2
D 3 12 197844 1082.6 644 615 182.2
D 12 248 89118 485.8 644 615 182.2

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