ASTROSAT CZTI

Data Quality Report

Orbit 24987

Creation date: 2024-06-27T19:12:39.804496
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/AS1C05_013T04_9000003660_24987cztM0_level2.evt modeM0/AS1C05_013T04_9000003660_24987cztM0_level2_quad_clean.evt
Size (bytes)166,979,52041,811,840
Size159.2 MB 39.9 MB
Events in quadrant A1,070,534280,937
Events in quadrant B1,083,240289,159
Events in quadrant C1,227,384274,382
Events in quadrant D1,524,792263,202

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A046752
B046931
C050851
D060031

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A21871105.029721%
B21871155.258345%
C2187853.886603%
D21871215.532693%

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 2522 2188 0 0 0.00% 0.00%
B 2522 2188 0 0 0.00% 0.00%
C 2522 2188 0 0 0.00% 0.00%
D 2522 2188 4 4 0.16% 0.18%

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 10970 188.35 274 267 56.8
A 13 254 3459 56.17 274 267 56.8
A 3 137 2769 44.03 274 267 56.8
B 12 111 6897 121.8 273 266 54.4
B 11 111 6141 107.91 273 266 54.4
B 14 111 5842 102.42 273 266 54.4
C 7 247 172584 2809.53 259 259 61.3
C 14 238 40947 663.36 259 259 61.3
C 13 61 1899 26.74 259 259 61.3
D 7 238 460500 7120.15 258 248 64.6
D 1 52 45487 699.85 258 248 64.6
D 2 244 22286 340.93 258 248 64.6

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