ASTROSAT CZTI

Data Quality Report

Orbit 36993

Creation date: 2024-06-27T21:33:59.330529
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_079T01_9000005254_36993cztM0_level2.evt modeM0/AS1A11_079T01_9000005254_36993cztM0_level2_quad_clean.evt
Size (bytes)959,857,920116,150,400
Size915.4 MB 110.8 MB
Events in quadrant A5,158,654724,007
Events in quadrant B10,405,144661,556
Events in quadrant C5,576,085724,506
Events in quadrant D7,212,585671,612

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02160
B02160
C02160
D02160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0219204
B0379713
C0227663
D0286403

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10616190.178975%
B10616196818.538056%
C10616510.480407%
D106164103.862095%

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 13452 10618 3 3 0.02% 0.03%
B 13452 10618 1287 1287 9.57% 12.12%
C 13452 10618 33 33 0.25% 0.31%
D 13452 10618 375 375 2.79% 3.53%

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 10 83 380250 1552.39 1215 1192 244.2
A 13 6 32472 128.1 1215 1192 244.2
A 7 16 22247 86.23 1215 1192 244.2
B 5 184 5428377 24895.42 1131 1101 218.0
B 0 221 227916 1040.42 1131 1101 218.0
B 5 172 67896 306.39 1131 1101 218.0
C 15 214 448893 1623.58 1183 1194 275.7
C 0 10 156014 561.46 1183 1194 275.7
C 1 23 119115 427.64 1183 1194 275.7
D 12 17 1133022 4004.8 1163 1131 282.6
D 1 52 815420 2881.08 1163 1131 282.6
D 13 249 220033 774.51 1163 1131 282.6

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