ASTROSAT CZTI

Data Quality Report

Orbit 31684

Creation date: 2024-06-27T20:31:31.238406
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/AS1A10_103T09_9000004630_31684cztM0_level2.evt modeM0/AS1A10_103T09_9000004630_31684cztM0_level2_quad_clean.evt
Size (bytes)798,180,480128,252,160
Size761.2 MB 122.3 MB
Events in quadrant A4,338,453862,369
Events in quadrant B7,447,792847,598
Events in quadrant C7,130,508790,608
Events in quadrant D4,696,411806,984

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182265
B0275812
C0269242
D0192402

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8297861.036519%
B82993644.386071%
C82996037.265936%
D8299991.192915%

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 26678 8299 2 2 0.01% 0.02%
B 26678 8301 142 142 0.53% 1.71%
C 26678 8301 186 186 0.70% 2.24%
D 26678 8301 36 36 0.13% 0.43%

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 0 13 60311 269.81 1103 1084 219.5
A 13 254 15253 64.55 1103 1084 219.5
A 3 1 12472 51.88 1103 1084 219.5
B 6 159 2242818 11104.87 1072 1047 201.9
B 4 80 495477 2449.22 1072 1047 201.9
B 10 245 194363 957.61 1072 1047 201.9
C 3 233 2474619 10491.22 1015 1021 235.8
C 0 10 341185 1442.73 1015 1021 235.8
C 14 238 166971 703.84 1015 1021 235.8
D 8 195 412803 1641.76 1059 1031 250.8
D 13 249 154424 611.59 1059 1031 250.8
D 10 203 41006 159.38 1059 1031 250.8

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