ASTROSAT CZTI

Data Quality Report

Orbit 37934

Creation date: 2024-06-27T21:46:20.465195
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/AS1A11_082T01_9000005356_37934cztM0_level2.evt modeM0/AS1A11_082T01_9000005356_37934cztM0_level2_quad_clean.evt
Size (bytes)862,004,160130,694,400
Size822.1 MB 124.6 MB
Events in quadrant A6,688,051823,541
Events in quadrant B6,735,330819,204
Events in quadrant C5,339,857829,482
Events in quadrant D6,621,520745,862

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0268794
B0272303
C0226893
D0272343

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02160
B02160
C02160
D02160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A106742342.192243%
B106745194.862282%
C10674340.318531%
D106743102.904253%

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 13450 10676 212 212 1.58% 1.99%
B 13450 10676 322 322 2.39% 3.02%
C 13450 10676 29 29 0.22% 0.27%
D 13450 10676 308 308 2.29% 2.88%

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 15 222 1269404 5233.55 1196 1173 242.3
A 10 83 640069 2636.5 1196 1173 242.3
A 7 16 80969 329.29 1196 1173 242.3
B 4 171 820112 3660.47 1167 1136 223.7
B 5 172 573259 2557.14 1167 1136 223.7
B 0 229 267346 1189.84 1167 1136 223.7
C 15 214 444539 1636.44 1170 1180 270.9
C 0 10 222957 818.58 1170 1180 270.9
C 14 254 47661 171.56 1170 1180 270.9
D 2 249 486493 1714.31 1161 1130 283.1
D 1 52 472695 1665.57 1161 1130 283.1
D 12 227 332296 1169.68 1161 1130 283.1

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