ASTROSAT CZTI

Data Quality Report

Orbit 23128

Creation date: 2024-06-27T18:50:14.418540
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/AS1T03_173T01_9000003416_23128cztM0_level2.evt modeM0/AS1T03_173T01_9000003416_23128cztM0_level2_quad_clean.evt
Size (bytes)308,070,72055,440,000
Size293.8 MB 52.9 MB
Events in quadrant A2,865,504361,431
Events in quadrant B1,730,727385,853
Events in quadrant C2,734,450338,500
Events in quadrant D1,777,613362,113

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107271
B073771
C0103542
D077061

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660
B0660
C0660
D0660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A324746414.290114%
B3247652.001848%
C324650115.434381%
D3246772.372150%

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 4432 3247 297 297 6.70% 9.15%
B 4432 3247 2 2 0.05% 0.06%
C 4431 3246 271 271 6.12% 8.35%
D 4431 3246 26 26 0.59% 0.80%

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 6 16 1289062 15622.28 408 401 82.5
A 13 254 4891 54.43 408 401 82.5
A 0 226 3602 38.81 408 401 82.5
B 0 190 33625 415.01 427 417 80.0
B 5 172 18629 227.6 427 417 80.0
B 12 111 9210 109.88 427 417 80.0
C 8 208 1098796 12061.5 390 392 91.1
C 14 238 62135 678.0 390 392 91.1
C 2 16 29141 315.69 390 392 91.1
D 2 82 58549 579.61 415 404 100.3
D 13 153 57447 568.63 415 404 100.3
D 12 233 22260 217.87 415 404 100.3

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